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Lasers for Pain-free Dentistry
Chris writes "Australian researchers say that frequency-doubling a femtosecond laser is the way to pain-free dentistry. Using two different Ti:sapphire sources it was found that the 400 nm second harmonic gave the best results. Lasers have long been touted as pain-free replacements for the dreaded dentist's drill. However, the hardness of dental tissue has demanded high-energy pulses for drilling. Previous attempts have resulted in unacceptably slow removal of tooth enamel, and have also damaged teeth. These previous efforts caused shock waves, vibrations and also heated up the tooth's softer tissue, causing significant pain to the patient. Because femtosecond pulses are so short, heat conduction effects are virtually eliminated."
damn you dentists!
I got FP!
Waiting a couple of seconds...
hmm di dum...
fp fp fp fp
- To understand recursion, we must first understand recursion -
Had a root canal this morning.
Well Well Well
this post gets +3 funny when it is exactly
the same as the post before it.
which means this post should be modded as redundant.
do only the brain damaged get mod points?
mod away pudknockers
Isn't it "Curiosity killed the cat, satisfaction brought it back"?
Dacels Jewelers can't be trusted.
The problem is that most moderators don't read the faq, and therefore don't read at -1, oldest first when they moderate. Presumably, in this case Opergost posts at +2 by default, and the moderator reads at +2.
/. now are the moderators.
As a result, Quill_28 is ignored, and has his thunder stolen by Opergost. As they say, karma makes karma.
Arguably, the only trolls left on