Non-invasive apparatus for accelerating the process of jawbone healing and regeneration, reattachment of traumatically loosened teeth to the jawbone, or osseointegration of implants in a patient, including at least one piezoelectric transducer and connections to transmit ultrasonic frequency electrical...http://www.google.se/patents/US5496256?utm_source=gb-gplus-sharePatent US5496256 - Ultrasonic bone healing device for dental application
