A device for generating high-frequency mechanical vibrations for dental purposes comprises a current detector (50) fitted in the supply line of a vibration generator (12). The output signal of the current detector (50) is transmitted to one of the inputs of a control circuit (74), which at its other...http://www.google.es/patents/US6545390?utm_source=gb-gplus-sharePatente US6545390 - Device for generating high-frequency mechanical vibrations for a dental handpiece
Device for generating high-frequency mechanical vibrations for a dental ...
