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Canadian Scientists Regrow Teeth

54mc writes "APL reports that Canadian Scientists have created the first device able to regrow teeth and bones. The researchers at the University of Alberta in Edmonton filed patents earlier this month in the United States for the tool based on low-intensity pulsed ultrasound technology after testing it on a dozen dental patients in Canada."

220 comments

  1. Just in time... by Anonymous Coward · · Score: 0

    For the Blade TV series!

  2. Amazing by Anonymous Coward · · Score: 3, Funny

    I didn't believe in the tooth fairy until I saw my dentist in loafers.

    So if you are out there, Mr. Dentist man, you can now officially BITE ME!

    1. Re:Amazing by tomhudson · · Score: 0, Offtopic

      didn't believe in the tooth fairy until I saw my dentist in loafers.

      So if you are out there, Mr. Dentist man, you can now officially BITE ME!

      Don't be so quick - remember, this is from Canada ... you could end up looking like this guy or this one ...

      though I'm sure more than a few of you wouldn't mind spending some time with this one

    2. Re:Amazing by Anonymous Coward · · Score: 0

      Last link definitely NSFW, folks. Just a heads up. . .

  3. Inevitable Discovery by supafly613 · · Score: 4, Funny

    This was a 2 phase discovery:

    Phase 1 - Invent a sport where a piece of equipment that, at times, travels towards your face at 160 km/hour and weighs only 170 grams.

    Phase 2 - Invent a way to grow teeth back due to resulting injury from Phase 1

    It's a Canadian make-work program :)

    --
    - - - "Some people hate the English. I don't. They're just wankers. We, on the other hand, are colonized by wankers."
    1. Re:Inevitable Discovery by lowrydr310 · · Score: 2, Interesting
      I don't understand why people always associate Hockey with missing teeth. For the past 30 years or so goalies have been wearing face shields, nearly eliminating their chances of getting teeth knocked out.

      Players who aren't goalies still don't wear face shields in 2006, however most facial injuries from hockey involve someone getting hit with the end of a stick or getting crushed into the boards by a bad hit, NOT getting hit with a puck (though it does happen sometimes).

    2. Re:Inevitable Discovery by Anonymous Coward · · Score: 0

      So how exactly does stating that facial inuries incurred while playing hockey are not puck related eliminate all missing teeth from hockey?

    3. Re:Inevitable Discovery by logpoacher · · Score: 1
      Please refer back to the original post. I quote: "Phase 1 - Invent a sport where a piece of equipment that, at times, travels towards your face at 160 km/hour and weighs only 170 grams."

      This is plainly a reference to the puck. Other types of facial injury will be discussed in a separate thread. Do keep up!

      Of course, if you'd asked why everyone has assumed that we're talking about hockey, *then* you'd have a point. I thought they were talking about tiddleywinks.

    4. Re:Inevitable Discovery by twistedsymphony · · Score: 2, Informative

      I'm not a hockey fan so I don't remember the guys name but There was a famous player way-back-when that lost a few teeth. He became sort of the face of hockey at the time with his toothless grin and thus the stereotype.

    5. Re:Inevitable Discovery by Anonymous Coward · · Score: 0

      Please refer back to the article. I quote: "Right now, we plan to use it to fix fractured or diseased teeth, as well as asymmetric jawbones, but it may also help hockey players or children who had their tooth knocked out." Do keep up!

    6. Re:Inevitable Discovery by Anonymous Coward · · Score: 3, Informative

      I think you are talking about Bobby Clarke, the current GM of the Flyers. He had one of those great hockey smiles, where you could slide a puck between the gap in his smile. The photo you are thinking of I believe was when the Flyers won the cup in the 70's (he played there before becoming the GM).

      Oh, and it isn't a sterotype. There are very few pro players who haven't lost a few chicklets along the way. Between sticks, pucks, hard hits, solid boards, and fights, about the only players who aren't missing a couple are the goalies. Hard to imagine the goalies only started wearing ANY facial protection in the late fifties, early sixties.

    7. Re:Inevitable Discovery by Anonymous Coward · · Score: 0

      I thought he was talking about baseball, except the Canadian thing doesn't apply there.

    8. Re:Inevitable Discovery by Monster_Juice · · Score: 1
      Remember this is Slashdot. Here is how it works.

      Phase 1 - Invent a sport where a piece of equipment that, at times, travels towards your face at 160 km/hour and weighs only 170 grams.

      Phase 2 - Invent a way to grow teeth back due to resulting injury from Phase 1

      Phase 3 - ???

      Phase 4 - Profit

      --
      Slashdot +1 funny -4 Insightful +1 informative -2 Redundant
      Karma: Somewhere between SCO and Microsoft
    9. Re:Inevitable Discovery by AppyPappy · · Score: 2, Funny

      Big deal. It's been done. I saw it in a Harry Potter movie. Growing bones is a nasty business.

      --

      If you aren't part of the solution, there is good money to be made prolonging the problem

    10. Re:Inevitable Discovery by shawb · · Score: 1

      Or the hockey coaches at my highschool. They had a couple gaps. But only one of two was canadian. Yes, the teeth were knocked out playing hockey. It was during pickup games as teenagers where full gear wasn't worn. So organized hockey may no longer have the missing teeth stigma, but just getting together on a frozen pond without even mouthguards can result in tooth loss.

      --
      I'll never make that mistake again, reading the experts' opinions. - Feynman
    11. Re:Inevitable Discovery by crossmr · · Score: 2, Insightful

      it can happen frequently. Darren McCarty got hit in the face twice in the same series against anaheim, during which the anaheim fans booed him as he lay on the ice (thats another story).
      They do take a lot of sticks in the face, and I'm not sure I buy this whole "a visor limits me" thing. I'm sure someone can design a visor that doesn't "limit" them. Were I in the NHL, I wouldn't hesitate to wear a full face mask, especially playing as a defenseman where I'd block a lot of shots.

    12. Re:Inevitable Discovery by fbjon · · Score: 1

      AFAIK where I come from, players are required to have face shields. It seems it's still not mandated in the NHL..

      --
      True confidence comes not from realising you are as good as your peers, but that your peers are as bad as you are.
    13. Re:Inevitable Discovery by Lord+Ender · · Score: 2, Interesting

      Not even the audience is safe in hockey. I was at an NHL game in Columbus a couple years back where a puck hit a girl in the audience. But it didn't just break teeth, it killed her. The players aren't the only ones who get hurt by pucks.

      --
      A slashdotter who didn't build his own computer is like a Jedi who didn't build his own lightsaber.
    14. Re:Inevitable Discovery by cellocgw · · Score: 2, Interesting


      AFAIK where I come from, players are required to have face shields. It seems it's still not mandated in the NHL..

      It's worse than that. The NHL bans full face shields (with exceptions for players recovering from broken cheekbones,jawbones, etc). It's an incredibly stupid rule.

      --
      https://app.box.com/WitthoftResume Code: https://github.com/cellocgw
    15. Re:Inevitable Discovery by Anonymous Coward · · Score: 0

      ...obviously you didn't watch the Stanley Cup finals! Of course, if you did, you'd think all Canucks had 1-month old beards and no teeth. But that's just the 200 or so Canucks involved in playoff hockey: the rest of us look suspiciously normal--just to fool you.

    16. Re:Inevitable Discovery by rs79 · · Score: 4, Funny

      "I don't understand why people always associate Hockey with missing teeth."

      Uh, because of all the missing teeth?

      This story was front page news in the Globe and Mail (Canada's national newspaper) yesterday a with the headline "new hope for hocky players" (or something like that) and had pictures of vintage and current toothless hocky players.

      --
      Need Mercedes parts ?
    17. Re:Inevitable Discovery by macdaddy · · Score: 1
      I recall a TV commercial from around 10 years ago that laid this out quite nicely. In fact I think it was a Mastercard commercial. It showed a hockey team and went out to list all of the dental procedures that they as a team had underwent. It basically went something like:

      20 pieces of bridgework
      36 crowns
      56 false teeth
      ## something else
      and then the priceless punchline.

      The numbers were incredible. Of a team of like 2 dozen people they had underwent hundreds of dental procedures. Hockey is single-handedly keeping the dental industry in the black.

    18. Re:Inevitable Discovery by lowrydr310 · · Score: 1

      It varies by league and arena. Everywhere I played in the Northeast USA (PA/NJ/NY), full face shields were requied. When I moved to Southern California, I was shocked to learn that they weren't required. There were only two people on my team who chose not to wear them, and guess who both took pucks to the face? Fortunately in both incidents, the pucks weren't moving fast, and they hit with the large flat surface (not the edge).

    19. Re:Inevitable Discovery by Thuktun · · Score: 2, Informative
    20. Re:Inevitable Discovery by Anonymous Coward · · Score: 0

      I have always associated the loss in teeth in hockey with getting punched in the face or getting hit with a stick.

  4. So how exactly does it work? by nietsch · · Score: 3, Interesting

    "with low frequency ultrasound pulses" is pretty uninformative for me. If they can regrow theeth, do they first have to implant a 'seed' that will focus the growth? Every theeth has a quite specific form, how will this device influence that?

    Or can it be that somebody patented a possible way to stimulate bone & tooth growth and some reporter let his fantasy run wild on it?

    --
    This space is intentionally staring blankly at you
    1. Re:So how exactly does it work? by goonies · · Score: 3, Insightful

      "with low frequency ultrasound pulses" is pretty uninformative for me.

      ..and pretty much wrong ;-) The article said "low-intensity pulsed ultrasound"
      low frequency ultrasound is like saying: "Thank God, I'm atheist!"
      I think they call it "Contradictio in adjecto" (see also: oxymoron)

      ...and sorry for the nitpicking!

      --
      .sigh
    2. Re:So how exactly does it work? by Red+Flayer · · Score: 2, Funny
      Every theeth has a quite specific form, how will this device influence that?
      (emphasis mine)

      Obviously you have a pressing interest in this cutting-edge technology.
      --
      "Trolls they were, but filled with the evil will of their master: a fell race..." -- J.R.R. Tolkien on Olog-hai
    3. Re:So how exactly does it work? by Bombula · · Score: 1

      The article doesn't explain how this works at all. Maybe that don't know? Perhaps ultrasound stimulates hormone production or adult stem cells or something like that?

      --
      A-Bomb
    4. Re:So how exactly does it work? by airlynx · · Score: 1

      The article mentions a previous publication in the American Journal of Orthodontics and Dentofacial Orthopedics which you can access for $30 as a pay-per-view sort of thing, but the abstract gives more than enough information if you want to know more about how it actually works. I copied the URL here, but bear with me, I don't do much slashdot posting of URL's. http://www2.us.elsevierhealth.com/inst/serve?actio n=searchDB&searchDBfor=art&artType=abs&id=as088954 0604002872&nav=abs&special=hilite&query=%5Bcontrib s%5D(el-bialy%2C)

      --
      I got into Linux for the free beer, but nobody seems to have any
    5. Re:So how exactly does it work? by 1u3hr · · Score: 0
      "with low frequency ultrasound pulses" is pretty uninformative for me. If they can regrow theeth, do they first have to implant a 'seed' that will focus the growth? Every theeth has a quite specific form, how will this device influence that?

      TFA says "stimulates tooth growth from the root once inserted into a person's mouth".

    6. Re:So how exactly does it work? by shawb · · Score: 1

      By intensity, I believe they mean low amplitude. The frequency can still be quite high.

      --
      I'll never make that mistake again, reading the experts' opinions. - Feynman
    7. Re:So how exactly does it work? by Frozen+Void · · Score: 0, Offtopic

      Appeal to God, is English figure of speech.So its not really oxymoron.
      Atheism cant change language.

    8. Re:So how exactly does it work? by Massacrifice · · Score: 4, Funny

      No, low frequency ultrasound means they just speak to the jaw gently until they convince it to regrow a new tooth.

      It's the canadian way; american scientists would come to the same results by menacing the offending jawbone with a large-caliber pistol and shouting at it.

      --
      -- Home is where you eat your heart out.
    9. Re:So how exactly does it work? by Aqua_boy17 · · Score: 1
      "this cutting-edge technology"
      If he has gum disease, wouldn't that be 'bleeding-edge technology'?
      --
      What if the Hokey Pokey really is what it's all about?
    10. Re:So how exactly does it work? by orgelspieler · · Score: 1

      Technically, you can have low-frequency ultrasound pulses. My wife is a physical therapist, and they use ultrasound daily. The ultrasound machine has two modes, continuous and pulsed. Continuous mode is good for tissue heating and relaxation, and pulsed mode is good for stimulating tissue growth (according to some).

      In the first case, low-frequency could mean at the low end of the ultrasound range. You can change the frequency of the ultrasonic vibrations in order to change the depth of heating as well as the overall energy transferred. High frequencies are used for shallow heating (3MHz goes about 1cm), and frequencies around two octaves lower (750 kHz) are for "deep heat" (5cm).

      You can also change the frequence of the pulses when in pulsed mode. This might also be what they were referring to. Bear in mind that different models have different capabilities, so check with your health care professional before using any of these devices. IANAPT.

    11. Re:So how exactly does it work? by Anonymous Coward · · Score: 0

      Every theeth has a quite specific form, how will this device influence that?

      I think you meant to say thooth.

      And there is nothing funny about thpeech impediments.

    12. Re:So how exactly does it work? by StikyPad · · Score: 1

      low frequency ultrasound is like saying: "Thank God, I'm atheist!"

      Actually, as it turns out, ultrasound is more than a single frequency, and "low frequency ultrasound" is a perfectly cromulent phrase to denote the lower end of that range.

      Sorry for picking the nit of the nit.

    13. Re:So how exactly does it work? by Anonymous Coward · · Score: 0

      > Appeal to God, is English figure of speech.So its not really oxymoron.
      > Atheism cant change language.

      Unless, of course, words mean things.

    14. Re:So how exactly does it work? by Frozen+Void · · Score: 1

      Literally.

  5. This notice is to inform you... by PixelPirate · · Score: 4, Funny

    This notice hereby notifies you, Tooth Fairy that you are hereby no longer needed as your job has been outsourced to Canada. We hope you will find our severance package of 6 months teeth as well as full dental to be more than generous. Also note that you are hereby banned from acting in the capacity of ortho-collector for a period of 8 years, and any attmpt to circumvent this will lead to a termination of the aforementioned benefits.

    -The Management

    1. Re:This notice is to inform you... by Joebert · · Score: 3, Funny
      This notice hereby notifies you, Tooth Fairy that you are hereby no longer needed as your job has been outsourced to Canada.

      *pssst*
      Think of all the money you could make knocking your own teech out & selling them to the tooth fairy. ;)
      --
      Wanna fight ? Bend over, stick your head up your ass, and fight for air.
    2. Re:This notice is to inform you... by Joebert · · Score: 1
      teech

      Geez, I couldn't get any use out of the thing.
      *smacks forehead*
      --
      Wanna fight ? Bend over, stick your head up your ass, and fight for air.
    3. Re:This notice is to inform you... by andrewman327 · · Score: 1
      I disagree. Now we can grow more and more teeth in labs then sell them to the tooth fairy! I think I have now solved the missing link of the age old equation:


      Step 1: Grow Teeth
      Step 2: ???
      Step 3: PROFIT!

      --
      Information wants a fueled airplane waiting at the hangar and no one gets hurt.
    4. Re:This notice is to inform you... by myth24601 · · Score: 1

      The real PROFIT will be when somone figures out a way to grow back missing hair.

      --
      No matter where you go, there you are.
    5. Re:This notice is to inform you... by camperdave · · Score: 1

      What? That would ruin my "We're all born with the same amount of testosterone. If you want to use yours to grow hair, that's your business." tee shirt empire.

      --
      When our name is on the back of your car, we're behind you all the way!
    6. Re:This notice is to inform you... by pedalman · · Score: 1
      I disagree. Now we can grow more and more teeth in labs then sell them to the tooth fairy! I think I have now solved the missing link of the age old equation: Step 1: Grow Teeth Step 2: ??? Step 3: PROFIT!
      Step 2 is: Market product to Great Britain.
      --
      Friends don't let friends line-dance.
    7. Re:This notice is to inform you... by Anonymous Coward · · Score: 0

      This notice hereby notifies you, Tooth Fairy that you are hereby no longer needed as your job has been outsourced to Canada.

      Once again, management demonstrates a complete lack of comprehension of how their own systems work.

      The Tooth Fairy was never in the business of providing replacement teeth.

      Strangely, management does seem to grasp this:

          Also note that you are hereby banned from acting in the capacity of ortho-collector

      So, in the face of new technologies that will actually result in *more* teeth, and most probably the need for increased collection rates, management got it wrong and gave the pink slip to the most efficient tooth collection in the system.

      Next, the completely ignorant PHB that made this brilliant move will probably be hired on to oversee Christmas.

  6. Great Test Bed by general+scruff · · Score: 2, Funny

    Lord know Canada is a great place to research tooth replacement, considering that Maine is so close by! We could really use some of that stuff down here!

    Gramps is getting sick of eating through a straw.

    --
    As a rule, I never trust dark brown ketchup.
    1. Re:Great Test Bed by dan828 · · Score: 1

      Bah! Everyone knows that those flappy-headed Canadians don't have any teeth.

  7. As a Canadian, I'd like to.. by ABeowulfCluster · · Score: 3, Funny

    .. test this on other body parts. Just sayin.

    1. Re:As a Canadian, I'd like to.. by Joebert · · Score: 1

      Well, they did say bones.

      --
      Wanna fight ? Bend over, stick your head up your ass, and fight for air.
    2. Re:As a Canadian, I'd like to.. by Anonymous Coward · · Score: 0

      At least! A real p3n1s enlargement coming true. What a fl00d of cheap enlargement devices will hit our emails in future.

    3. Re:As a Canadian, I'd like to.. by jamesh · · Score: 2, Funny

      I'm sure it's possible. Which particular bone did you have in mind?

    4. Re:As a Canadian, I'd like to.. by Anonymous Coward · · Score: 0

      funny bone? :)

    5. Re:As a Canadian, I'd like to.. by Anonymous Coward · · Score: 0

      What? Your dick fell off?

    6. Re:As a Canadian, I'd like to.. by tetabiate · · Score: 1

      If all the money men have spent on miracle p3n1s enlargement devices/treatements was used to make serious research on the subject, by now we would have already seen real possibilities. By the way, do you know that the bigger you p3n1s gets the more blood you need to fill it and the less blood is left for the brain to function properly? Most women would not like to sleep with mentally retarded ba5tards. Just joking, of course.

    7. Re:As a Canadian, I'd like to.. by Anonymous Coward · · Score: 0

      dude...it was to grow 'teeth and bones'...not 'teeth and boner'...please READ ! ! !

    8. Re:As a Canadian, I'd like to.. by mrchaotica · · Score: 1

      Just our luck: humans are one of the few (or maybe only) species that don't actually have a penis bone. This actually would work on, say, dogs or something.

      [cue educational cartoon "the more you know" banner]

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    9. Re:As a Canadian, I'd like to.. by mario_grgic · · Score: 1

      They said teeth and bones, not boner!

      --
      As the island of our knowledge grows, so does the shore of our ignorance.
    10. Re:As a Canadian, I'd like to.. by Alexandra+Erenhart · · Score: 1

      Oh, and I thought that already happens normally ;) Men don't look too bright when aroused :P And I guess when they say "bone enlargment" the mean bones that are already there Wouldn't it be painful to have a bone down there? Just wondering, I'm no man.

      To grow bones? What could that mean? Replace bones that got broken or enlarge them? That could mean you might get a few inches taller. That wouldn't be so bad, I always wanted a couple of inches more on my height

    11. Re:As a Canadian, I'd like to.. by MillionthMonkey · · Score: 1

      Just our luck: humans are one of the few (or maybe only) species that don't actually have a penis bone.

      Can you imagine breaking a penis bone? Ow ow ow. You'd have to wear a cast for weeks while under strict doctor's orders to avoid women and pornography.

    12. Re:As a Canadian, I'd like to.. by froschmann · · Score: 1

      They said in TFA that it can regrow "bone". I'm sure balls aren't far behind.

      JK

  8. Dog... by Anonymous Coward · · Score: 0, Funny

    I suggest Dog the Bounty Hunter sign up ASAP.

  9. This article has more details by nietsch · · Score: 4, Informative
    --
    This space is intentionally staring blankly at you
    1. Re:This article has more details by RobertB-DC · · Score: 1
      http://www.biologynews.net/archives/2006/06/28/ult rasound_may_help_regrow_teeth.html

      Unfortunately, the article now includes only this limited summary:
      The site you are attempting to access is temporarily unavailable.
      If you are the site owner please contact your system administrator.

      Slashdot strikes again!
      --
      Stressed? Me? Of course not. Stress is what a rubber band feels before it breaks, silly.
  10. Canada has really young scientists by Anonymous Coward · · Score: 4, Funny

    "Canadian Scientists Regrow Teeth"
    A group of Canadian scientists in the age from 4 to 10 has successfully regrown their teeth after they mysteriously lost them.

    1. Re:Canada has really young scientists by operagost · · Score: 1

      They've also mysteriously come into a lot of money, most of it in quarters and dimes.

      --

      Gamingmuseum.com: Give your 3D accelerator a rest.
    2. Re:Canada has really young scientists by MochaMan · · Score: 1

      You forget that our national pastime is hockey...

  11. For Suckers by Joebert · · Score: 3, Funny

    Thee ma ?
    I thold you bruthing your theeth wath fo thuckerth !

    --
    Wanna fight ? Bend over, stick your head up your ass, and fight for air.
  12. Wow! by pjt48108 · · Score: 1

    That's a story with bite!

    --
    Mmmmmm... Bold, yet refreshing!
  13. Root canal? by paulhar · · Score: 4, Interesting

    > Chen helped create the tiny ultrasound machine that gently massages gums and stimulates tooth growth from the root once inserted into a person's mouth, mounted on braces or a removable plastic crown.

    As several of my teeth have gone the way of the fairy, I wonder how this "treatment" copes with teeth that have been root canal filled.

    And what colour does the new tooth grow back at? It it's pure white - fantastic as it'll put lots of whiting products out of business, but bad as it'll have the pringles effect; once you start you'll have to have all your front/visible teeth done, even if they are just discoloured.

    1. Re:Root canal? by ObsessiveMathsFreak · · Score: 2, Funny

      once you start you'll have to have all your front/visible teeth done, even if they are just discoloured.

      Or you could just, you know, brush them..... Oh wait.

      --
      May the Maths Be with you!
    2. Re:Root canal? by rasjani · · Score: 1

      Im sure we have done the waiting part allready =)

      --
      yush
    3. Re:Root canal? by BioCS.Nerd · · Score: 1

      "the pringles effect" -- brilliant usage of the phrase! A tip of the hat to you.

    4. Re:Root canal? by Anonymous+Brave+Guy · · Score: 1

      Speaking as someone whose teeth were basically wrecked by an incompetent orthodontist years ago, I can promise you that not everyone with dental problems brought them upon themselves. My dentist often comments on how good my oral hygiene is, yet I have some sort of filling in nearly every tooth in my mouth.

      --
      If you disagree, post your argument. (-1, Overrated) isn't your personal censorship tool for views you don't like.
    5. Re:Root canal? by CaptainNerdCave · · Score: 1

      i can't wait to see how this turns out, i have a broken incisor. it is really miserable, just the root is left (no nerve) and there's a piece of some kind of porcelain glued to it. can i eat sandwiches and pizza like the rest of the world? no :( i would really like to see this become realistic soon.

    6. Re:Root canal? by schon · · Score: 2, Informative

      I wonder how this "treatment" copes with teeth that have been root canal filled.

      Saw this on the news last night - they said that it will repair root canals.

      About the only thing it won't do is regrow a tooth that's been removed - it needs cells to start with.

    7. Re:Root canal? by shawb · · Score: 1

      If the tooth grows back pure white it would more likely put a lot of money in the pockets of the tooth whitening companies than put them out of business. It's probably going to be a lot less painful and expensive to just whiten the other teeth. I know this can be a problem with porcelain caps on broken teeth. They are so much whiter than the other teeth that it makes your teeth look really bad. So dentists use a combined strategy of whitening the other teeth and staining the cap untill they're about equal.

      --
      I'll never make that mistake again, reading the experts' opinions. - Feynman
    8. Re:Root canal? by Alexandra+Erenhart · · Score: 1

      I have the same problem. Blame the enamel. My teeth are good an all but cavities loves them. I have no natural defenses :(

    9. Re:Root canal? by fbjon · · Score: 1

      I fail to understand it...?

      --
      True confidence comes not from realising you are as good as your peers, but that your peers are as bad as you are.
    10. Re:Root canal? by milletre · · Score: 2, Interesting
      >I wonder how this "treatment" copes with teeth that have been root canal filled.

      Saw this on the news last night - they said that it will repair root canals.

      About the only thing it won't do is regrow a tooth that's been removed - it needs cells to start with.

      Sounds pie-in-the-sky at the moment to me. It may be that there is some viable periodontal ligament around necrotic teeth, but there's simply no living tooth-producing tissue in them (odontoblasts). Odontoblasts are found at the pulp-dentin border, which is pretty much removed during cleaning and shaping of the canal space. What they're saying, then, is that they can either bring cells back from the dead (odontoblasts not filed away during root canal therapy), or, using ultrasound only, induce random connective tissue or bone cells into not only reverting to an earlier cell type, but then having it turn into an odontoblast, and then having that odontoblast lay down dentin not on in the quantity they want, but in the direction they want.

      Not bloody likely. I can tell you from experience that teeth with root canals are different animals when it comes to resstoration, fracture susceptibility, extraction, etc.

    11. Re:Root canal? by milletre · · Score: 1
      If the tooth grows back pure white it would more likely put a lot of money in the pockets of the tooth whitening companies than put them out of business. It's probably going to be a lot less painful and expensive to just whiten the other teeth. I know this can be a problem with porcelain caps on broken teeth. They are so much whiter than the other teeth that it makes your teeth look really bad. So dentists use a combined strategy of whitening the other teeth and staining the cap untill they're about equal.


      You really don't want that. The only white part of teeth is enamel. Enamel is a lot like glass: it's very hard, but also very brittle. It doesn't make a very good restorative material. To have a mouth full of enamel with no dentin (the layer of tooth beneath enamel) is to have a mouth full of broken teeth. Many people reading this post have probably experienced a tooth with a filling mysteriously breaking after 15-20 years ... it's because when the filling was placed, the dentin support for the cusp that broke was probably removed, leaving only beautiful white enamel behind.
    12. Re:Root canal? by Anonymous Coward · · Score: 0

      Once you pop you can't stop.

    13. Re:Root canal? by Anonymous Coward · · Score: 0

      These teeth have to have a root still intact. The ultrasound causes irritation much like when a child is gumming, causing the root to develop a tooth in response to the irritation. DNA is responsable (as always) for 'tooth shape', so if your first tooth was deformed, the next one will be too (sorry). If you have had a root canal, get a false tooth.

  14. It makes sense that this comes from Canada... by i_want_you_to_throw_ · · Score: 4, Funny

    What with all those hockey players losing teeth. It was either there or Kentucky where people also don't have teeth. Interestingly that's where the toothbrush was invented. Otherwise it would have been called the teethbrush.

    Thanks, I'll be here all week, enjoy the veal.

    (Disclaimer: I am a Kentuckian)

    1. Re:It makes sense that this comes from Canada... by kaufmanmoore · · Score: 1

      Dont forget the need though for american football players who dont wear helmets while riding their motorcycle.

    2. Re:It makes sense that this comes from Canada... by airlynx · · Score: 1
      Okay, but Kentucky ranks #2 in the loss of natural teeth by the United States. Can you guess the #1 state? See link

      http://www.statemaster.com/graph/hea_ora_hea_los_o f_nat_tee-health-oral-loss-natural-teeth

      --
      I got into Linux for the free beer, but nobody seems to have any
    3. Re:It makes sense that this comes from Canada... by Sandor+at+the+Zoo · · Score: 1

      For those who don't want to click the link above, it's West Virginia.

      airlynx's post is like the stupid nightly news ads: "Are we going to get some rough weather this weekend? I'll tell you at 11 o'clock!" "This common cosmetic may cause heart failure -- tune in at 11!"

      I hate those f'ing ads. Just tell me if it's going to rain. I'm not staying up for your idiotic show.

    4. Re:It makes sense that this comes from Canada... by Anonymous Coward · · Score: 0

      Do you know how you can tell that the toothbrush was invented in Kentucky?

      Because if it had been invented anywhere else, it would be called a teethbrush.

    5. Re:It makes sense that this comes from Canada... by airlynx · · Score: 1

      well, okay, fine. I didn't state the #1 state right out because it wasn't all that important, just a side fact. Now if it were something like "Toilet Paper causes Lung Cancer" I probably would have stated that before making anyone click on a link. I apologize about the huge incovenience I have put you through.

      --
      I got into Linux for the free beer, but nobody seems to have any
  15. Medical research is too slow by MichaelSmith · · Score: 2, Interesting

    From TFA:

    With the help of Chen and Ying Tsui, another engineering professor, the initial massive handheld device was shrunk to fit inside a person's mouth.

    But they had something like this working in the late 1990s so for part of the last seven years they have been mucking around making a minature version of their machine. A proper engineering job would have taken six months, max, and they could have kept working on the science.

    Sorry to bitch about this but I see too much improvisation going on and not enough forethought.

    1. Re:Medical research is too slow by Vellmont · · Score: 2, Insightful


      A proper engineering job would have taken six months, max, and they could have kept working on the science.

      You can figure out how long it would take to engineer a device you've just heard of all of 20 minutes ago from a short, non-technical article posted on slashdot?

      --
      AccountKiller
    2. Re:Medical research is too slow by Anonymous Coward · · Score: 0
      the initial massive handheld device was shrunk to fit inside a person's mouth.
      Mick Jagger is due for an upgrade.
    3. Re:Medical research is too slow by ceoyoyo · · Score: 1

      There might have been a bit of work going on to test it, make sure it works properly, doesn't cause cancer, etc. You know, to make sure it's safe to use in people. Nobody really cares if a rabbit grows giant buck teeth.

      The article did say the larger version is approved in Canada and the US, which means some pretty extensive testing.

    4. Re:Medical research is too slow by Anonymous Coward · · Score: 4, Funny

      Yes. He's a manager, they can do that.

    5. Re:Medical research is too slow by Drakai · · Score: 1

      I especially like the added 'max'. So off the cuff to set an upper bound on time to complete innovation. Man, what took Einstein so damn long to complete the Unified Theory? He already had General Relativity. The Unified Theory should have only taken 2 years, max, and that lazy 'great thinker', so called, didn't even finish it!

    6. Re:Medical research is too slow by Anonymous Coward · · Score: 0

      But they had something like this working in the late 1990s so for part of the last seven years they have been mucking around making a minature version of their machine. A proper engineering job would have taken six months, max, and they could have kept working on the science.

      Sorry to bitch about this but I see too much improvisation going on and not enough forethought.


      They had it working on rabbits in the late 90's (see quote below). I didn't read anything about it working on humans int he late 90's. That sounds like pretty quick work to get it from rabbits (in a large form factor) to working on humans in a small form factor.

      Tarek El-Bialy, a new member of the university's dentistry faculty, first tested the low-intensity pulsed ultrasound treatment to repair dental tissue in rabbits in the late 1990s.

  16. I won't believe it... by jkrise · · Score: 5, Funny

    until they prove it on these (currently) toothless specimens:
    1. The Justice dept. (SCO vs IBM)
    2. The anti-trust dept. (MS vs US)
    3. Other suggestions welcome...

    --
    If you keep throwing chairs, one day you'll break windows....
    1. Re:I won't believe it... by Anonymous Coward · · Score: 0

      seems in the first case, the teeth grew yesterday (SCO vs IBM)
      Citation:

    2. Re:I won't believe it... by ekgringo · · Score: 0

      How about the UN?

    3. Re:I won't believe it... by LeonardsLiver · · Score: 1

      4. Congress

    4. Re:I won't believe it... by corbettw · · Score: 0, Troll

      I'll second the Justice Dept. (vs. the New York Times). Since when did treason become legal?

      --
      God invented whiskey so the Irish would not rule the world.
    5. Re:I won't believe it... by mOdQuArK! · · Score: 1

      Since Bush took the White House.

    6. Re:I won't believe it... by Drakai · · Score: 1

      Oh Snap!

    7. Re:I won't believe it... by Danse · · Score: 1
      1. The Justice dept. (SCO vs IBM)
      2. The anti-trust dept. (MS vs US)

      DOJ == "anti-trust dept."
      --
      It's not enough to bash in heads, you've got to bash in minds. - Captain Hammer
  17. What about bones illness? by KarMax · · Score: 5, Interesting
    This is amazing... i never imagine that this could be possible.

    It can also stimulate jawbone growth to fix a person's crooked smile and may eventually allow people to grow taller by stimulating bone growth, Chen said.
    I'm far away to know something about odontology, so i ask to the slashdot doctors:
    This stimulation process could be used to cure bone illness, like Osteoporosis or Osteosarcoma ??

    Thanks in advance.
    --
    Rock and Roll
    1. Re:What about bones illness? by Zzootnik · · Score: 2, Interesting

      Actually, I was more thinking of Using this on Space Travelers to stave off the Bone Density Loss that inevitably (??) occurrs... Sounds like One of the big problems solved...MMmmmmmm... Full Body Ultrasound....

      Or- yeah...I suppose you could also use it to treat/cure degenerative bone loss symptoms. No reason it can't have multiple applications...Except maybe Patent law.

      --
      Sig currently under construction. Mind the gap....
    2. Re:What about bones illness? by Red+Flayer · · Score: 2, Informative

      IANAD (but I do have a Pharmacy degree). But most likely this could not be used to cure osteosarcoma, as stimulating growth of a cancer is probably not the best idea.

      As for osteoporosis, I would suspect stimulating growth is not the right way to go either -- the bones are there, it's the structure of the bone that is weakened. Exercise, calcium intake, Vitamin D intake, and sometimes Fosamax (slows down resorption of calcium) or hormone regimens (still experimental) are the treatments du jour.

      --
      "Trolls they were, but filled with the evil will of their master: a fell race..." -- J.R.R. Tolkien on Olog-hai
    3. Re:What about bones illness? by sjwaste · · Score: 1

      Can it cure crippling bone-itis?

    4. Re:What about bones illness? by Anonymous Coward · · Score: 1, Informative

      If you read the abstract of the scientific paper TFA refers to, you'll see that the LIPUS (low-intesity pulsed ultrasound) device _significantly_ decreases resorption.

    5. Re:What about bones illness? by Wolvie+MkM · · Score: 1

      Don't you worry about BLANK let me worry about BLANK!

      --
      I Like Pie...
    6. Re:What about bones illness? by douglips · · Score: 1
      But most likely this could not be used to cure osteosarcoma, as stimulating growth of a cancer is probably not the best idea.

      I think his point assumed that the standard treatment for osteosarcoma is to remove a large chunk of bone. After that, it might be handy to grow the bone back rather than implant large numbers of rods/pins/screws and donor bone tissue that could be rejected.
    7. Re:What about bones illness? by nschubach · · Score: 0

      "Full Body Ultrasound...."

      Fully body bone shells? Now that's a concept. Creepy, but neat all at the same time.

      --
      Every time I start to have faith in humanity, I ruin it by driving to work between 7 and 8 am.
  18. Tyranny Of Patents by ObsessiveMathsFreak · · Score: 0

    The USPTO will strike again. Innovation will once again be stifled. This technology will remain overpriced and underdeveloped because all R&D is in effect frozen. Toothaches for all!

    What's that you say?! With the encouragement of patents this technology would never have been developed?! But wait! These are "University" researchers. They are, in all likelihood, paid to do their research out of the public purse. Canadians have already paid for this research, and the scientists in question were already motivated to perform it.

    Patents are less than useless to society. A competator is copying your ingenius invention? Welcome to the real world. This is what other businesses have to put up with all the time. Competition. Crying to the government for preferential treatment just because you were the first to stitch together some preexisting pieces of technology won't earn you too many brownie points with the people you subsequently gouge.

    Patents aren't required. People and business will innovate without them. Don't believe me? Look at the wheel.

    --
    May the Maths Be with you!
    1. Re:Tyranny Of Patents by heinousjay · · Score: 4, Insightful

      Fantastic rant. It's logically inconsistent, substitutes opinions for facts, uses examples that don't illustrate your point, and sets up strawmen as its main thrust. Absolutely Slashdottian.

      --
      Slashdot - where whining about luck is the new way to make the world you want.
    2. Re:Tyranny Of Patents by dwandy · · Score: 1

      Maybe we can use this to grow new back-bones for the legislators.

      --
      If you think imaginary property and real property are the same, when does your house become public domain?
    3. Re:Tyranny Of Patents by Manchot · · Score: 1

      They are, in all likelihood, paid to do their research out of the public purse. Canadians have already paid for this research, and the scientists in question were already motivated to perform it.

      Most engineering professors get the money for their research by directly appealing to outside organizations. Though the university/public pays their salary, this is for teaching and for the prestige that they bring to the university, not for their research.

      Patents are less than useless to society. A competator is copying your ingenius invention? Welcome to the real world. This is what other businesses have to put up with all the time.

      Many times, it wouldn't even get that far. Say that you invent something truly remarkable, and a large company gets wind of it. They'll have a version of your invention out before you can even get a business up and running. No competition can occur because of the relative sizes of the two organizations. Of course, you'll never see a dime. Does that seem fair to you?

    4. Re:Tyranny Of Patents by ObsessiveMathsFreak · · Score: 1

      Say that you invent something truly remarkable, and a large company gets wind of it. They'll have a version of your invention out before you can even get a business up and running. No competition can occur because of the relative sizes of the two organizations.

      Let's say I do invent something, patent it, and a large company uses my invention without the patent being licenced. What am I supposed to do? Start a civil action? No legal action is possible on my part because of the relative sizes of the two organisations. I should never have let them get wind of it in the first place, by holding onto my trade secrets.

      The myth that patents protect the little genius inventor is one of the great lies dragged out in any patent discussion. They do no such thing. They actively conspire against him. The small inventor stands a better chance with no patent system, as at least his business won't be torpedoed his larger competators' submarine patents.

      Patents do not help the little guy. They only help the big guys screw the rest of us over. These scientists won't make a dime out of their patent, unless they sell it off that is.

      --
      May the Maths Be with you!
    5. Re:Tyranny Of Patents by Oligonicella · · Score: 1

      "No legal action is possible on my part because of the relative sizes of the two organisations."

      What a crock of shit. It happens all the time. Ever hear of pro bono or lawyers taking a percentage of the settlement?

      What you espouse is no more than your opinion phrases as if it's truth. Perhaps you don't read enough.

      "The small inventor stands a better chance with no patent system, as at least his business won't be torpedoed his larger competators' submarine patents."

      No, dimwit, it would be torpedoed by out-competititon, as mentioned above you. Submarine patents are held by small firms too, you know.

    6. Re:Tyranny Of Patents by Anonymous Coward · · Score: 1, Insightful
      If you worked in a University performing basic science research or medical research then you would know that you are required to sign forms saying that the University has the right to patent anything you come up with in your research, whether you want to or not. Large universites have teams of patent lawyers going through all publications to look for anything remotely patentable.


      Even though an idealized scientist working for the sake of increasing human knowledge and the betterment of mankind might oppose patenting such an invention, the reality is different. Science does not pay well, and people like money. Besides, you don't have a choice when it comes to signing away the rights to the university. Heck, you are usually given a small percentage of the profits from the patent, which is more motivation for scientists to throw away their rights in such a cavalier fashion.

    7. Re:Tyranny Of Patents by Manchot · · Score: 1

      No legal action is possible on my part because of the relative sizes of the two organisations. I should never have let them get wind of it in the first place, by holding onto my trade secrets.

      First of all, to make a business and sell a product, you have to have investors. To convince investors to invest, you need to disclose information. That's a fact: you cannot simply "hold on to your trade secrets." Secondly, if your case against the large company really is so cut-and-dry, any good lawyer would be happy to take on your case on contingency (i.e., for a certain cut of the settlement). It's really quite common in the U.S.

    8. Re:Tyranny Of Patents by Anonymous Coward · · Score: 0
    9. Re:Tyranny Of Patents by Anonymous Coward · · Score: 0

      Au contraire, many universities do not have such policies. The University of Waterloo, for example, does not do this. Ownership remains the discoverer/inventor's

    10. Re:Tyranny Of Patents by BigCheese · · Score: 1

      I don't want them having backbones until they have a brains. They'd just stick up for stupid things. Oh, wait...

      --
      The obscure we see eventually. The completely obvious, it seems, takes longer. - Edward R. Murrow
  19. Don't need 'em! by PoprocksCk · · Score: 2, Funny

    I don't need no stinkin' "real" teeth. My false teeth are just fine, thank you very much! Hell, I can even eat corn on the cob, if someone cuts it off the cob and then mashes it up into a fine paste!

  20. Presence of stump? by mcai8rw2 · · Score: 1

    The article didn;t make it very clear...but do you have to have part of the tooth left to stimulate it to grow? or will the tooth grow from nothing.

    This is quite a differnt approach to the "growing teeth from stem cells" that I read about recently. Both seem quite viable, but growing teeth from stem cells might be a little more complecated prehaps?

    --
    >>>Scanning for I.D.I.O.T.S. >>>
    >>>I.D.I.O.T.S. FOUND! >>>
    1. Re:Presence of stump? by Red+Flayer · · Score: 2, Interesting

      There needs to be a root. Interesting that you bring up the research into teeth grown from stem cells[1], possibly one could create the root from stem cells, implant, and then finish the growth with this device. I'm not sure if tissue rejection would be a problem, though.

      There's also a good potential for this to be used for body modification. Easy enough to add things to the diet to impart a color into the tooth while it grows (one reason why kids aren't given tetracycline -- it makes their growing teeth permanaently orange). A mouthful of glow-in-the-dark teeth? No problem. How about teeth that glow orange or green under a blacklight, instead of violet?

      --
      "Trolls they were, but filled with the evil will of their master: a fell race..." -- J.R.R. Tolkien on Olog-hai
    2. Re:Presence of stump? by 1u3hr · · Score: 1
      Easy enough to add things to the diet to impart a color into the tooth while it grows (one reason why kids aren't given tetracycline -- it makes their growing teeth permanaently orange). A mouthful of glow-in-the-dark teeth? No problem. How about teeth that glow orange or green under a blacklight, instead of violet?,

      I'm missing three teeth, including 2 incisors, and have a couple of root canals that will probably eventually need to be pulled. At this point I don't care if they're white, black or green; I'd just love to get a full set of healthy teeth. But I've been hearing tantalising stuff like this for 20 years, I'll probably die with a mouth full of porcelain.

  21. Just freakin' great. by Khaed · · Score: 5, Funny

    We can grow teeth now. Next step, growing teeth in places not the mouth.

    Now all those nightmares I have about a woman with teeth in her vagina are going to come true.

    Thanks a lot Canada!!

    1. Re:Just freakin' great. by prionic6 · · Score: 4, Funny

      So you have a problem with sticking your genitals into a female body part that has teeth in it?

    2. Re:Just freakin' great. by Khaed · · Score: 1

      If I plan on that body part clenching up tightly, rhythmically, after a few minutes? Hell yes.

      If a girl had a jaw spasm halfway through oral sex, that would suck (bada-baaa).

      Of course, this is /. so... (I have like four jokes, and none of them are funny.)

    3. Re:Just freakin' great. by Apostata · · Score: 1

      Dude - you've got to stop watching Cronenberg films.

      --

      This wasn't just plain terrible, this was fancy terrible. This was terrible with raisins in it. - Dorothy Parker
  22. Horse Hockey! by wdkeeper1 · · Score: 5, Informative

    Horse hockey on the "growing a new tooth" thing, but I can see repairing damaged teeth, depending on the cause of the damage. You need the presence of odontoblasts, etc in order for a new tooth to grow. That guy Chen is an engineer, not a dentist. I'm thinking he doesn't really understand how teeth form and grow, so he's got high hopes for his invention. The root structure of teeth is covered in cementum and dentin, which are repairable, so it makes sense that teeth with root resorption may be fixed by the ultrasonic thing. But to completely grow new teeth, you'd have to have "tooth stem cells" in the area, and those stem cells would have to know what size and shape of tooth to form for that area. I don't see that one happening. I also don't see damaged enamel being fixed by this thing; once enamel is gone, it's pretty much gone.

    1. Re:Horse Hockey! by Anonymous Coward · · Score: 0

      This is a little more realistic... From the American Journal of Orthodontal and Dentofacial Orthopedics 2004 Aug;126(2):186-93 Repair of orthodontically induced root resorption by ultrasound in humans. El-Bialy T, El-Shamy I, Graber TM. Faculty of Dentistry, King Abdulla h Aziz University, Jeddah, Saudi Arabia. Root resorption is an adverse outcome of orthodontic tooth movement. In addition to the iatrogenic response and compromising the crown-root ratio, root resorption has led to increased malpractice litigation against orthodontists. A clinically acceptable method of treating root resorption has not been validated in the literature to date. Previous research has shown that low-intensity pulsed ultrasound (LIPUS) can enhance healing of various types of traumatized connective tissues and stimulate dental tissue formation. The purpose of this study was to evaluate the effect of LIPUS on the healing process of orthodontically induced tooth-root resorption in humans. Twelve orthodontic patients who were seeking orthodontic treatment that necessitated extracting the first premolars before mechanotherapy participated in this study. For each patient, buccally activated springs were used to tip the maxillary first premolars buccally, with an initial force level of 50 g; the springs were checked weekly to ensure continuous force levels. A short period of LIPUS was applied to 1 side of each patient's mouth, with the other side used as a control. After 4 weeks, the experimental premolars of all patients were extracted, and the premolars of 6 patients were studied by scanning electron microscopy (SEM); the premolars of the other 6 patients were studied histologically. The number and total area of resorption lacunae as examined by SEM were compared between the LIPUS-treated and the control premolars with a t test. The SEM study showed a statistically significant decrease in the areas of resorption and the number of resorption lacunae in the LIPUS-exposed premolars. Histologic examination showed healing of the resorbed root surface by hypercementosis. The results of this study provide a noninvasive method for reducing root resorption in humans.

    2. Re:Horse Hockey! by mrchaotica · · Score: 1

      Yes, growing back teeth after a game of "horse hockey" would be a good application for this technology. : )

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    3. Re:Horse Hockey! by drunken_boxer777 · · Score: 2, Insightful
      There is no reason to believe that 'tooth stem cells' wouldn't 'know' how to regrow the tooth. In fact, there is sufficient evidence that hypothetical 'tooth stem cells' would 'know' exactly how to regrow the tooth. Research in animals with regenerative capacity in certain tissues/organs has shown that the process of regeneration very closely mimics the process of the initial growth and development of that tissue during embryonic/larval stages. We're talking the same profile of gene expression and protein synthesis.


      Therefore, if your tooth 'knew' how to grow once, it 'knows' how to grow again, given that there are 'tooth stem cells' and that there aren't factors which impede regeneration. (Which there are, in humans and most mammals. The slashdot story from a week or so ago about repairing damaged spinal cords in rats - the researchers used certain reagents which inhibit the inhibitors of regeneration, that's why it worked.)

    4. Re:Horse Hockey! by 1u3hr · · Score: 1
      You need the presence of odontoblasts, etc in order for a new tooth to grow.

      Put this together with these guys and we could have a solution. That story dated 2004 says: "it could be five years before the technology is widely available to the general public"; probably too optimistic though.

    5. Re:Horse Hockey! by Anonymous Coward · · Score: 1, Informative

      RTFA. It was invented by a dentist in the 90's. The news here is that the engineer created a version small enough to be implanted in the tooth.

    6. Re:Horse Hockey! by asuffield · · Score: 4, Informative

      I also don't see damaged enamel being fixed by this thing; once enamel is gone, it's pretty much gone.

      I'm not sure about the rest, but this bit is wrong. Tooth enamel is worn down all the time by your teeth being used, both from abrasion and acidity; this is the normal way they are supposed to work. It is continually replaced by your body, through a chemical process based around your saliva that deposits minerals on the teeth from the outside. So long as the environment in your mouth is not acidic (ie, you haven't been eating sugary food recently) and your diet supplies all the necessary minerals (mostly calcium), fresh enamel will be deposited. Damaged enamel doesn't really need "fixing", you can just let it reform.

      The reason why people tend to think that it can't reform is because the process that grows the teeth in the first place can't be repeated - that deposits enamel in a completely different manner. Also, the reenameling process is quite slow and will only work if you don't snack on sugary things all day.

      The problem is when the tooth is damaged below the level of the enamel; this can't be regrown currently (and prevents the tooth from re-enameling over the top) because the damage from eating progresses faster than the tooth can heal. If the enamel has been worn through completely, damage to the tooth below is inevitable - that's when your dentist drills it out and fills it. If this invention can do something about that, it's a significant step forward.

    7. Re:Horse Hockey! by wdkeeper1 · · Score: 1

      Tooth enamel is worn down all the time by your teeth being used, both from abrasion and acidity; this is the normal way they are supposed to work. It is continually replaced by your body, through a chemical process based around your saliva that deposits minerals on the teeth from the outside.
       
      Well, you're right about teeth continually being worn down by abrasion... also erosion, attrition, and abfraction, all slightly different things. But ENAMEL is not continually replaced by your body, or replaced at all. It can be strengthened by SOME of the minerals you mentioned, the most important being fluoride (not calcium... calcium doesn't make a hamster's rear end of a difference to the tooth after it is fully formed... common misconception). Re-mineralization of the enamel matrix can occur after an onslaught of acidity such as after drinking an acidic soda or juice, and it can even occur in what dentists call "insipient" or very small carious lesions (cavities). But once the cavity, or bacteria, reach the dentin, which is the middle layer of the tooth, the enamel is gone and can't be replaced at that point. THAT is when the dentist has to go in and "drill"... what dentists delicately call "preparing" a tooth for a restorative filling. He or she "drills" out the soft, bacteria-infested portion of the tooth and replaces it with one of several restorative materials.

      The problem is when the tooth is damaged below the level of the enamel; this can't be regrown currently (and prevents the tooth from re-enameling over the top) because the damage from eating progresses faster than the tooth can heal.
       
          Here, you're getting enamel and dentin mixed up. Dentin is the middle layer of the tooth, located between the inner pulp (nerve tissue) and the outer relatively thin enamel. DENTIN is continually deposited throughout our lives, not enamel. So long as the tooth remains relatively healthy, odontoblasts reside within the dentin; odontoblasts are the cells responsible for continually depositing dentin. The dentin layed down while the tooth is initially forming is called primary dentin. Dentin layed down after the tooth has fully developed is called secondary dentin, and the deposition of secondary dentin increases especially after the age of 35 or 40. This is why dentists may have a harder time finding the pulp tissue within a tooth for a root canal procedure as people age. Here's the important part: Dentin layed down in response to trauma, such as a bacterial insult (cavity) is called tertiary or reparative dentin. As long as the "nerve" of the tooth does not die (become necrotic), the odontoblasts can still do their job, but tertiary dentin is much harder and more disorganized than the other two types. But again, once enamel is gone, it's gone. If the matrix is still there, there's a chance it can be remineralized, which is why dentists hound everyone to brush and floss and also why we drown you in fluoride everytime you come in for a hygiene appointment.

      One other thing; don't get tooth wear mixed up with tooth structure lost due to bacteria. You are right in that teeth continually wear down during our lifetimes; but that is where secondary dentin comes in, and also cementum, which is present on the surface of the root of the tooth. As we age, teeth continue to do what's called "passive eruption" to make up for normal tooth wear occurring over a lifetime. Teeth have no such weapons to combat structure loss due to bacteria. Although, there has been significant research done to come up with a vaccine against the bacteria that commonly cause caries, or tooth decay.

      There is also a great sugar out there called Xylitol... it is a sugar, but the bacteria that cause caries cannot live off of it. Chewing gum containing Xylitol actually has caries-resistent properties. Gum chewers, rejoice!

    8. Re:Horse Hockey! by Anonymous Coward · · Score: 0

      The other half of the equation I think is the gums. If the tooth can grow back, can the gums be restored. I haven't seen any news in that area

    9. Re:Horse Hockey! by wdkeeper1 · · Score: 1

      Snaggle-toothed hockey players and sugar lovers may soon rejoice as Canadian scientists said they have created the first device able to re-grow teeth and bones.

      The above is a direct quote from the article being discussed, which is what I was responding to. You may want to RTFA more closely yourself... do you really think all this discussion and excitement would have been generated solely from an engineer making a gadget small enough to fit in someone's mouth? I think you missed the point of the article. Also, the gadget was scaled down to fit inside a person's MOUTH, not inside a tooth. RTFA.

      The only dentist mentioned, Dr. El-Bialy, did not "invent" the concept of using ultra-sonic technology in dentistry; it's been used for many more years than since the '90's. He does appear to have used it in a different way and to treat a different problem than before, which is highly commendable (search for his abstract on PubMed). BUT he used it in the 1990's to treat root resorption that occurred after orthodontic treatment, NOT to completely regrow a brand new tooth. My point was that Chen, who is an engineer, is the one saying that this technology can be used to regrow a whole tooth. That hasn't been shown yet. The article does not say that the dentist backs up that statement. In my OPINION, Chen is getting a little too excited about ultrasonic technology and his scaled-down gadget. My guess is that he doesn't know a whole lot about dentistry and what is needed in order for teeth to grow. As I said before.

  23. Was this really needed? by Herkum01 · · Score: 1

    Just great, the people that we refer to as sharks will start to grow back their own teeth, they will never stop being a menace to society now!

    Darn you Canadians!

  24. Regrow Teeth by rocketjam · · Score: 5, Funny

    Thweet!

  25. Comment removed by account_deleted · · Score: 0

    Comment removed based on user account deletion

  26. So what makes this different from Exogen? Size by Benanov · · Score: 1

    Exogen (website: http://www.exogen.com/, warning, flash and WMV alert) is basically an ultrasound device that's supposed to accelerate the healing of fractures. A lot of the media demonstrates the forearm because that was where most of the testing was done. SWMBO's mother broke her upper arm and used this system for a while; it did help...once she quit smoking.

    So this all that different enough to deserve a patent? That it's an implant/crown/etc. instead of an external system.

    The idea of using ultrasound to grow bone is nothing new. The size is.

  27. Bob Dole endorsement by kaufmanmoore · · Score: 1

    Bob Dole uses this product, Bob Dole, Bob Dole.

  28. I was waiting for this by Anonymous Coward · · Score: 0

    I got my first root canal recently and finding out that they had to take out the nerve inside was truly shocking. It felt as an amputation of my body, immediately I wondered why on earth noone has invented to regrow the damn thing. One option was to take it out, the second one was to have the empty molar filled, and topped it off with a cumbersome crown.

    Anyways, I am glad to hear about this discovery because now I can get rid of all my artificial fillings and regrow my natural teeth :-)))

    Just hope they freaking hurry up to make this a standard practice at the dental clinic.

  29. End of dentures in sight? by Mostly+a+lurker · · Score: 1

    We shall probably need to wait until patents expire before any significant commercialisation of this occurs, but does this, in principle, mean that we can replace diseased teeth new natural ones, rather than replacing them with dentures?

  30. Great! by Anonymous Coward · · Score: 0

    This means that curbing isn't so harmful after all.

  31. In another part of the world... by CrimsonScythe · · Score: 1

    ...Shane MacGowan let out a unmistakingly happy "*blargh* bloody motherfuckers" upon hearing this news.

    --
    The view was horrible and the smell was even worse; Julie severely regretted becoming a proctologist.
  32. Makes Sense by Borland · · Score: 0, Troll

    They have closer cultural ties to Britain than the US. Just think of the market potential!

  33. Re-grow a bone, eh? by Anonymous+Cowled · · Score: 1

    its not just me that thinks that's funny, is it?

  34. elephants by tau0 · · Score: 1

    Elephants do not die from old age, they die from starvation
    (and of course they are killed by humans).
    In the course of their lifetime they get a set number of
    sets of teeth and after the last set is worn away, they
    starve.
    Now we can save them - just need someone to put the pea
    size devices in their mouths.

    1. Re:elephants by toQDuj · · Score: 1

      well, given that their last set of teeth will probably set in at an old age, I _would_ say that this is death of old age. Otherwise people don't die from old age either, but from cardiac arrest and the likes.

      B.

      --
      Every experiment which ends in a big bang is a good experiment.
    2. Re:elephants by Punko · · Score: 1

      The cause of death reported on death certificates here cannot be "old age". However, nor can it be "cardiac arrest", as something caused the heart to stop. IANAD, but I am related to one.

      --
      If only we could fall into a woman's arms without falling into her hands
  35. Dr. McCoy would be jealous! by Anonymous Coward · · Score: 2, Interesting

    What's next? All I can say is WOW, I've lost s few teeth from gum disease.

    It isn't nearly as impressive as the technological miracle I've experienced the last 2 days.

    I wore glasses since age 7 (yes I'm a nerd). I switched to contacts 4 years ago, and had to have reading glasses as well as contacts. I used to be four-eyes, now that I'm old it's six eyes.

    Then I got a cataract in my left eye. The specialist told me of a new implant that was only approved in 2003, and extra $1900 above what insurance pays. As it's a one shot deal (they can't remove an implanted artificial lens) I went temporarily broke on it.

    Dr. McCoy would have been jealous of all the technology in the operating room.

    In the recovery room I could read the clock on the wall without any external corrective lenses for the first time in memory (I've worn glasses since 1959). The next day (yesterday) the eye doctor tested my eye, 20-20. For the first time in my life I have no restrictions on my driver's license!

    Last week I had the type on the browser enlarged, plus wore reading glasses. Today I have the type set for normal, and no reading glasses. They tell me in a month I'll be able to read six point type w/o reading glasses!

    In Star Trek II, McCoy gives Kirk a pair of antique reading glasses because he's allergic to the drug that cures age related nearsightedness.

    We're still 200 years from the 23rd century, but we've passed Star Trek tech. Even McCoy didn't have these implants at his disposal! The implant I got, called a Crystal Lens, cures nearsightedness, farsightedness (both age-related and youth myopia), cataracts, and even astigmatism!

    I'll get the other eye done in a few years. Then maybe I'll get some Canadian teeth!

    (anti-MRC="botched". Couldn't be more wrong!)

  36. The rats will sue by Frightening · · Score: 1

    Copyright(C) 1434500 B.C

    Fun-fact: rats have been regrowing their teeth since Elvis.

    Note to the humorless: please don't ruin joke by posting scientific facts about rats/humans

  37. I know a country who will be REALLY HAPPY by p51d007 · · Score: 0, Troll

    Britian.........anyone ever notice they have poor dental hygiene?

  38. My state needs one by reverend_rodger · · Score: 0

    I speak on behalf of all the people of Alabama when I say: We's need one o' 'dem there teef regrowers!

  39. In other news by LeonardsLiver · · Score: 1

    marriage rates in Kentucky & Tennessee have skyrocketed.

  40. Coincidentally by Anonymous Coward · · Score: 0

    The entire country of England erupts in mass celebration.

    1. Re:Coincidentally by Anonymous Coward · · Score: 1, Informative

      Not exactly. Why do you think the British have bad teeth? Because they like it? Of course not. Its because their dentists' 'union' keeps the numbers of dentists in the country small, and the prices astronomical. Implant work can cost the same as a house.

      So I suspect that perhaps three of these devices will be allowed into the UK, for use on just a few ultra-rich patients. The rest of us will join the half-mile queues to sign on to a dentist when one of the few become available.

    2. Re:Coincidentally by agentdunken · · Score: 0

      Or do they have bad teeth because all they do is drink non stop and all that sugar kills their teeth :) Plus adding the side of being drunk their to drunk to brush their teeth afterwards :)

      --
      Linux, because a PC is a terrible thing to waste.
    3. Re:Coincidentally by Anonymous Coward · · Score: 0

      Who on EARTH marked this 'informative'?

      There is a shortage of NHS (read: socialised medicine) dentists in the UK, because NHS reforms have made it too unprofitable for dentists to work in state healthcare. There is no shortage of private dentists, and if you look around, they're not all too expensive. Major reconstruction work is quite expensive in the states too, you just usually have it covered by health insurance. Guess what? you can do that here.

      The simpsons cliche about the english having bad teeth is down to the fact that we had socialised dentistry, which treated everyone but provided only minimal cover. Things really are not like this anymore. We are, however, a little less troubled by the often hollywood-slanted notion of shiny white dental perfection, as we seem to have other things to worry about.

  41. I knew my years of not brushing would pay off by Anonymous Coward · · Score: 0

    For years I thought "You know, teeth can't be too hard to create, why brush when I am sure that someone will invenet a way to replace them before mine get pulled."

  42. Here's one trying to regrow by dwrugh · · Score: 1
  43. What will happen to my favorite jokes? by Anonymous Coward · · Score: 0

    How do you complement a Canadian?

    Nice tooth.

    How do you know the toothbrush was invented in Canada?

    Otherwise, it would be called a teethbrush.

  44. Dental technology by foniksonik · · Score: 5, Interesting

    I've complained before and will again, that dentistry has been the most underwhelming of 'sciences' for the past 100 years. What advances have we seen since the use of anaesthetics to reduce the pain? We got ultra-violet whitening systems.... and veneers.

    So finally there's some progress. First was the company in florida which has since sort of gone into hiding... they showed a solution of genetically engineered oral bacteria that would take over control of the mouth by out-competing the native breed.. but were engineered to not create cavities. Haven't heard much on that front recently though. Maybe they got bought up by the makers of Crest or something...

    Now we have a device that can regrow eroded tooth material... well it's something at least.

    Maybe I can stop thinking of the whole practice of drilling and gouging and filling in with metals as the most barbaric so-called treatments of any human health problem. Dentistry is still at the equivalent stage of just cutting off the leg when it's broken, rather than fixing it. Hopefully that is about to change.

    --
    A fool throws a stone into a well and a thousand sages can not remove it.
    1. Re:Dental technology by mink · · Score: 1

      I had a root canal/crown job back in December 1997 and one again in December 2005. Major advances had been made in the technology to clear out the root area as well as for creating the crown. X-rays went from film to digital.

      Sure it's not like I'm bionic and can chew through iron bars, but the latter experiance was much faster and enjoyable.

      --
      Well I've wrestled with reality for thirty five years doctor, and I'm happy to say I finally won out over it.
  45. Gullibility of the Slashdot community by osgeek · · Score: 2, Insightful

    I'm curious... when you folks read an article like this, do you automatically believe it?

    Personally, when I see "filed for a patent earlier this month", "testing it on a dozen patients", and "commercialization in two years" -- coupled with a science-fiction-like technology -- I think "BULLSHIT".

    Just add it to the list of other bullshit vaporware impractical/impossible inventions that show up every once in a while trying to grab funding/sucker dollars: holographic memory, ridiculous compression technologies, flying cars, perpetual motion machines, etc.

    I find it pretty amazing that almost all of the responses in this thread just assume that these guys are telling the truth about their "discovery". I'd love to be proven wrong. I'd love to see a new miraculous bone and tooth growing technology be discovered... but scientific and religious claims are easy to make. It's easy to put out a press release. It's hard to prove miraculous things. It's hard to provide evidence for the seemingly-unbelievable.

    1. Re:Gullibility of the Slashdot community by Anonymous Coward · · Score: 0

      It's not impossible. Thousands of animals have teeth that grow continuously. Humans are saddled with defective DNA, but the cells are still there.

    2. Re:Gullibility of the Slashdot community by osgeek · · Score: 1
      It's not impossible. Thousands of animals have teeth that grow continuously. Humans are saddled with defective DNA, but the cells are still there.
      This isn't about whether or not it would be possible to force teeth to grow. I believe that it might be possible to coax teeth to grow somehow. I'm just highly doubtful of press releases announcing patents with little or no peer-group testing (a dozen patients? Come on...). With ultrasound?

      You just don't see REAL discoveries made like this.

      Look at the recent announcement on using stem cells to repair nerve damage in rats, for example. That smells like science. When I read the initial annoucement, I believed that the results of well-done experiments were being reported. Scientists the world over have been experimenting with stem cells for a decade, trying to figure out how to use their unique properties to heal the human body. We've been reading about little steps of progress here or there, but these big breakthroughs are never free. They take time for scientists to work out all the problems. Even now, they're not ready to use this particular technique on human beings. They'll spend years experimenting on pigs, then chimps before they start working on human beings. If (big "if") they can get the same types of results with human beings that they did with the rats, it's still another 5 to 10 years away.

      So, I'm not so much arguing what's possible. I'm just pointing out how easily the Slashdot community (seems to) believe any press release that surfaces. It's an almost religious-like gullibility, with belief in science fiction replacing belief in an afterlife.

      The sad thing to me is that capital will be wasted on this junk science, rather than going to more likely successes like the aforementioned stem cell research.
    3. Re:Gullibility of the Slashdot community by Anonymous Coward · · Score: 0

      I'm sorry, but you... sir, ... are an idiot.

      The quality and scrutiny that goes over research at the University of Alberta (and most all Canadian Universities, for that matter) tend to be 5 to 10X more intense than that of American Universities. Universities here are competitive, full of the best minds and few and far between.
      Not to mention that the Canadian National Centre for Nanotechnology exists at the UofA... This is a far, far cry from 'junk science', sir, but an amazing collaboration between two of the brightest minds in orthodontics and nanotech engineering in the world (not to mention all their graduate students/support staff).

      There's always a skeptic... god bless 'em...

      I'll admit I'm not a regular here, but give slash-dot some credit....

    4. Re:Gullibility of the Slashdot community by osgeek · · Score: 1

      I'm an idiot for not being a gullible boob?

      I claim that you're, at best, someone who is a sucker for press releases -- although it's also possible that you're a scum-sucking AC sock puppet.

  46. Wow by blackbeaktux · · Score: 2, Funny

    Innovative and creative approach, and it looks promising. Looks like this one has teeth.

    crickets.chirp()

  47. Harry Potter: Nothing to see here by ickies · · Score: 1

    In the wizarding world, they've been able to re-grow bones for ages. But I hear it's nasty business.

  48. This is going to change the face... by Samurai+Cat! · · Score: 1

    ...of Waffle House waitresses, everywhere.

    --

    "People" using "unnecessary" quotes should be "shot".
  49. Re:Presence of stump? -- grammar nazi by toQDuj · · Score: 1

    please check your spelling. It's complicated with an i instead of an e. learn and advance.

    B.

    --
    Every experiment which ends in a big bang is a good experiment.
  50. And In Related News by Petersko · · Score: 3, Funny

    The American Dental Association has called upon the Canadian Government to put an end to the regrowth of teeth, claiming that the availability of cheap teeth from Canada makes American dentists less interested in improving their techniques.

    Said an A.D.A. spokesperson, "We need prices to remain high so that we can afford to innovate. When people can just get new teeth cheaply by just crossing the border, our strangle-ho.... uh, revenue stream will be jeopardized. The U.S. government must act immediately!"

  51. Better Link, Article from Globe & Mail (Canada by geerbox · · Score: 3, Informative
  52. So... by irrelevant · · Score: 3, Funny

    Can the device be controlled via BlueTooth?

  53. Not new exactly by TimmyDee · · Score: 3, Informative

    A few years ago, I broke both bones in my forearm -- the radius was broken so badly that I had pulverized a small portion of it so the two parts didn't line up exactly. They didn't notice this in the x-rays (and so couldn't cut into my hip as they hadn't gotten my authorization for that), so they tried artifical (read: cadaver) bone to regrow the spot. Didn't work.

    A few months later, they enrolled me in a trial of a similar sort of ultrasonic technology by which my bone should regrow. They had been getting a 94% success rate with fibias, but the arm was something new. Needless to say, I was one of those lucky minorities that didn't show any growth. Months later, I was back on the table with new bone being brought in from my hip. Six weeks after that, I was healed. While cool, there is certainly no replacement for real bone.

    --
    Per Square Mile, a blog about density
    1. Re:Not new exactly by Eddy_D · · Score: 1

      You sure that it was ultrasound therapy? It might have been electro-magnetic pulse therapy... thats been around for a while. It's typically used to stimulate bone regrowth.

      --
      - I stole your sig.
    2. Re:Not new exactly by DrCode · · Score: 1

      And maybe even older: There was some research that suggested that a cat's purring helps it to repair broken bones.

  54. The Door Into Summer by Nom+du+Keyboard · · Score: 1

    Didn't Robert Heinlein once write about dental regrowth technology? Can time travel now be far behind (or ahead)?

    --
    "It's the height of ridiculousness to say for those 9 lines you get hundreds of millions."
    1. Re:The Door Into Summer by Catbeller · · Score: 2, Insightful

      Sure, Lazarus Long mentions rebudding teeth as a part of a long list of antigeria techniques used at the Howard Clinics in "Time Enough For Love".

      But even he would say it was an obvious step. We've been needing this for as long as there've been people... BUT KUDOS for you, sir, for remembering science fiction didn't start on television and movies. Or anime.

      There's treasure in the golden age of science fiction. A lot more imagination than displayed in current "sci-fi", which is to science fiction as Hostess cupcakes are to food. Thinking about it, the readers of golden-age SF went on to build moonships. Current sci-fi readers have a hard time thinking about driving electric cars. Difference of breadth of imagination.

  55. Surprised it wasn't the British by bubblegoose · · Score: 1

    I really surprised it was the Canadians and not the British who discovered this.

    --
    I hope that someday we will be able to put away our fears and prejudices and just laugh at people. - Jack Handey
  56. Heard it all before... by clambake · · Score: 1

    I have been waiting for YEARS for the "Genetically modified mouth bactera", the kind that don't cause cavities, to become mainstream... But after a big hubub and fanfare, nope, never heard another peep about it... This is the same damn thing I suspect.

  57. Regrow a bone? by Slovenian6474 · · Score: 1

    How many people loose "just" a bone?

  58. Hum a Few Bars by Doc+Ruby · · Score: 1

    "low-intensity pulsed ultrasound"

    If I just hum along outside the office to repopulate my gums, does the Canadian RIA"A" send me a dentist's bill? Or am I covered under socialist health insurance, just like my other piracy is covered by the blank media tax I filled a few shoeboxes with?

    --

    --
    make install -not war

  59. Geography lesson, etc by WebCowboy · · Score: 1

    Canada is a great place to research tooth replacement, considering that Maine is so close by!

    This research was done in EDMONTON...in ALBERTA. Los Angeles is closer to Edmonton than any place in Maine. Incidentally the University of Alberta (my alma mater) has arguably the best schools of dentistry in Canada--of course there aren't many to choose from but it's pretty world-class. The U of A is actually recognised internationally for its research in many areas of life sciences (it has contributed to major innovations in the treatment of cancer, diabetes and heart disease).

    Perhaps you were confusing Edmonton, Alberta with Edmundston, New Brunswick. The latter is just across the river from Madawaska, Maine and has no school of dentistry at all--in fact the people of western New Brunswick probably share the same dental challenges as the good citizens of northern Maine. I've visited NB and ME though and the people there are very nice...great place for people who like to snowmobile or cross-coutry ski...

    1. Re:Geography lesson, etc by general+scruff · · Score: 1

      I was trying to be funny... Humour doesn't wait for you to RTFA.

      --
      As a rule, I never trust dark brown ketchup.
  60. Already happening by Chris+Daniel · · Score: 1
    --
    Don't blame me -- I voted for Roslin.
  61. Potential Ramifications by Dark_Optiplex · · Score: 1

    It should be interesting to see how this affects the field of plastic surgery and people with forms of osteoporosis (bone loss). Although, I could foresee a potential misuse of this technology by body modification artists. Just what we need, people growing horns on their heads.

  62. Much more information here by Anonymous Coward · · Score: 0
    These articles have more info:

    http://www.theglobeandmail.com/servlet/story/LAC.2 0060628.TEETH28/TPStory/National/
    http://www.expressnews.ualberta.ca/article.cfm?id= 7691
    http://www.uofaweb.ualberta.ca/ece/news.cfm?story= 47563

    and here is one of the papers:

    Growth Modification of the Rabbit Mandible Using Therapeutic Ultrasound: Is it Possible to Enhance Functional Appliance Results?
    http://www.angle.org/anglonline/?request=get-docum ent&issn=0003-3219&volume=073&issue=06&page=0631

    They don't know why ultrasound stimulates growth, but it does.

  63. Yep by JazzLad · · Score: 0

    Apparently you are.

    --
    "If you have nothing to hide, you have nothing to fear." - Every fascist, ever
  64. Pain? by Anonymous Coward · · Score: 0

    Sounds great.

    Was there any period of pain after the surgery, if so, how long did it last? What is the name of the implant (my dad has a small cataract)?

    Is this recommended for just people with cataracts, or is it for general use too? Been wearing glasses since the age of eight myself...afraid of contacts due to horror stories of people not cleaning them properly and getting yellow eyes, or danger of scratching my cornea when removing them. A relative got radial keratotomy (sp?), but got the "star-halo" vision at night...scary. Read the /. post the other day on the Air Force folks getting their eyes "ground down" (forgot the name) too; how does yours compare...?

    Thanks in advance.

    1. Re:Pain? by Anonymous Coward · · Score: 0

      Yup I'd like to know too. I have retinitis pigmentosa and cataracts. The combination of the two is...a pain. So it'd be nice to have some basic information on this so I can harrass my ophthalmologist to check it out next time I have a check-up.

  65. All of these advancements... by syrrys · · Score: 0

    and they still cant make my penis bigger?!

    --
    "Patience is not a virtue, it's a waste of time."
  66. Re:The English by tizan · · Score: 1

    Look like me ? ...I am Martian

  67. Naturally occuring? by Anonymous Coward · · Score: 0

    A buddy at work here said that before she died, his 120 year old grandmother had started to regrow her teeth that she had lost when she was about 90. Does anyone know if this is a real phenomenon?

  68. Scientific Quest by pallyincloth · · Score: 1

    Can I use this device on perfectly good teeth? I would like to stimulate further growth on my 2 upper canine teeth. I've always wanted to have real fangs.

    Now, other possibilities may include: Real Buck Teeth, 1950's Werewolf Teeth (two bottom canines), and Jagged Style (every other tooth is longer). Am I missing any?

    I can also forsee some new "Teeth Fads" coming out now that people will have this ability to reshape their teeth. Hair fads, such as porkchops and mullets, are things of the past - teeth are the future.

  69. Skeptibility of osgeek by 2nd+Post! · · Score: 2, Informative

    How about the fact that published papers have shown, since at least 1996, that ultrasound can accelerate bone growth.

    If it can accelerate bone growth, it seems a logical enough step for someone to experiement with teeth, and given that it's been ten years since bone growth was seen, why is teeth/jaw regeneration so hard to believe?

    Or is it just because you haven't heard of it, it can't be real?

    Did you also know that light acts simultaneously as both a particle and a wave, depending on how you examine it?

    1. Re:Skeptibility of osgeek by Anonymous Coward · · Score: 0

      > Did you also know that light acts simultaneously as both a particle and a wave, depending on how you examine it?

      Poppycock, I say!

  70. Chronic Pain by peterfa · · Score: 1

    My father has chronic pain from a botched bypass surgery. His sternum is perminately half broken. It would help my father out greatly if this could offer a solution to somehow fix his sternum.

  71. Bullshitometer - levels dangerously high by mark-t · · Score: 1
    Whenever I hear the expression "commercialized within two years" it always raises red flags with me. However, the deciding factor for me was this sentence:
    Tarek El-Bialy, a new member of the university's dentistry faculty, first tested the low-intensity pulsed ultrasound treatment to repair dental tissue in rabbits in the late 1990s.
    Like many small mammals, rabbits teeth grow continually their entire life. They have to chew things constantly to keep them trimmed down. This isn't news, it's just plain stupid.
  72. Stretching muscle too far? by Kuvter · · Score: 1
    may eventually allow people to grow taller by stimulating bone growth

    How will this affect muscle growth to compensate the bone growth?
    --
    "To be is to do." --Socrates
    "To do is to be." -- Aristotle
    "Do-Be-Do-Be-Do..." --Sinatra
  73. meth addicts everywhere rejoyce. by Anonymous Coward · · Score: 0

    no really, they have scientists in Canada?

  74. Re:The English by Anonymous Coward · · Score: 0

    You mean regrowing teeth makes you gain lots of weight as well?

  75. Re:The English by Anonymous Coward · · Score: 0

    I suppose telling old out-of-date jokes makes a change from whining about getting your arse whipped at football... cobber.

  76. Good News by Anonymous Coward · · Score: 0

    This is good news for the people of Appalachia, and that drunk dude who used to sing for The Pogues.

  77. Find the Holy Hand Grenade! by cphilo · · Score: 1

    FTA: ...first tested the low-intensity pulsed ultrasound treatment to repair dental tissue in rabbits in the late 1990s. And you all thought that the Monty Python killer bunnies were a genetic malfunction. WRONG! They were created in the laboratory by the innocent looking, mild mannered Canadian scientists.

  78. Re:So how exactly does it work? How long before by davidsyes · · Score: 1

    this technology becomes "long in the tooth"?

    Imagine tooth-driving (like war driving) in which the assailants deliver ultrasonics to their victims. In a few weeks old Charlie will have fangs, or Tennessee Tuxedo choppers. "What's sa matter Charlie? Choppers comin' loose" will be a revived funny denture commercial..

    I wonder if the technology can be used to regrow the vestige human tail bone. Office ergonomics will revive a whole new bone of contention...

    Call it "Ultra-teethe". Now, unsuspecting people (who cannot afford to have ultrasonic clandestine assault detectors (CADS)) can be made to tease out Klingon-like teeth. Even the cheek bones can be modified ultrasonically, giving rise to a whole new designer makeup market. Turn your enemies into lookalikes from the 1970's The Island or the 1970's Cornelius from Planet of the Apes. The ultra-deluxe package permits government to "brand" prison inmates, but those who move too much will be subject to indeterminate, random regrowth, such as one leg or a rib being longer than normal. Even the skull can be adapted. This could be a "true shape of things to come".

    --
    Previously: "Linux... Toward the Sunrise..." Now: "Linux... Toward the-- No, now, part of Every Sunrise"
  79. have you ever checked your saliva pH? by nido · · Score: 1

    If your saliva's acidic, it'll dissolve away your enamel no matter what you do.

    http://www.thebadbreathreport.com/ - best $20 I've ever spent. Please note that I could've signed up for his affiliate program, but this is just a plain link.

    Also see http://www.euroamericanhealth.com/ - you could very well be a good candidate for his base powder, or baking soda at the least. Get some pH strips to test your saliva pH first, then you'll know what to do next.

    --
    Learn the rules so you know how to break them properly.
    www.teslabox.com
    1. Re:have you ever checked your saliva pH? by Alexandra+Erenhart · · Score: 1

      I really doubt it, because when I have a candy, for example, it can last for longer than most people. The enamel issue is part of my heritage. My dad's teeth are terrible. I got them from him =/