In the dental field we have been using instruments that vibrate at the speed of sound for a long time. Most of you have had the dental hygienist scale the hard deposits off your teeth with an ultrasonic scaler (you know, the vibrating instrument that shoots water all over your face!). Recently, we started incorporating sonic instruments to really clean the canals in teeth during root canal therapy. Now we have a sonic instrument to facilitate the placement of white fillings on back teeth. This will revolutionize the way dentists restore teeth. At the present, most dentists fill these teeth in many layers, curing the material one layer at a time. This is done to compensate for the shrinkage of the material as it is cured and to insure that the light that sets up the material reaches the deepest parts. It is a very time-consuming protocol, usually requiring 30 -40 seconds per increment. Also, when layering the material it is very difficult to avoid getting little voids between the layers.
SONICS TO THE RESCUE!
We now have an instrument that vibrates the white filling material at the speed of sound and converts the thick resin into a flowable state that can easily fill the entire cavity at one time. Once the machine stops, the resin turns back into a more viscous form that can be shaped and carved by the dentist into a beautiful representation of the original unblemished tooth. The special material also includes more photo-initiators to allow the whole restoration to be cured at once.
Everyone benefits from this new technology. Sonic assisted fillings are better (less voids) and faster.
Dr. David J. Hauss, Family & Cosmetic Dentistry: www.drhauss.com
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