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."

Comments

Ozone dentistry

[!splut]

So this is how Aussies do dentistry. While it's swell and all to be able to painlessly zap a hole in my tooth, it doesn't eliminate the fact that you'd be zapping a hole in my tooth.

The Brits, on the other hand, have gone for a no-hole approach. They're using a new treatment called Healozone, which involves fitting a rubber cap over the tooth and then smothering it with ozone, which eliminates all the bacteria in a matter of seconds. Painless, and much more cool.

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