Expert: Mark Bornfeld DDS - 3/31/2004

Question
How does the cavitron Work? What does it do?

Thanks

Andy

Answer
Dear Andy,

The Cavitron is a proprietary version of an ultrasonic scaler manufactured by the Dentsply-Cavitron Corporation. It was originally developed in the late 1950's as an electronic alternative to manual scaling-- the use of a sharp scaler or curette to remove hardened deposits of extraneous matter from the teeth.

The Cavitron basically works by applying a high-frequency (either 25,000 or 30,000 Hz) oscillating magnetic field across a conductive metallic stack, in which is induced a reactive magnetic field. The mechanical vibrations so produced are conveyed through a rigid metal insert to a dental instrument tip, which is placed against the tooth deposits to be removed. The instrument delivers a steady stream of water to the working tip, which serves the dual purpose of flushing away the dislodged debris and cooling the working tip, which would otherwise become uncomfortably hot.

The Cavitron can be fitted with a variety of tips, which can be used in the course of a routine cleaning, or alternately used in deep under-the-gum curettage for periodontal (gum) therapy. It can also be used to remove bonded dental restorations and appliances, such as orthodontic brackets.

Other types of ultrasonic scalers that work on piezoelectic transducers rather than electromagnetic stacks have since been developed, but the original Cavitron device is still the most popular for its utility, versatility and power.

Hope this helps...

Mark Bornfeld DDS
www.dentaltwins.com
Brooklyn, NY