A method and apparatus for treating hard dental substances wherein the work can be carried out in an indirect technique uses an intraoral video camera, whose images are reproduced on a monitor. To accomplish this and to prevent particles and bacteria in the patient's mouth from being spread, the apparatus...http://www.google.com.au/patents/US5484283?utm_source=gb-gplus-sharePatent US5484283 - Method and apparatus for treating hard dental substances
