Patent ID: 8474635

Claim:
A method for simultaneous liquefaction and acoustic debridement of a tooth root canal, the method comprising the steps of: (i) after shaping the tooth root canal with an endodontic file, inserting a discharge injection tube into the shaped tooth root canal, the discharge injection tube being connected to an ultrasonic hand piece and having a distal end portion configured for insertion into the shaped tooth root canal; (ii) after step (i), passing a flushing fluid under pulsed pressure through the ultrasonic hand piece and into the discharge injection tube while simultaneously superimposing an ultrasonic frequency to the flushing fluid under pulsed pressure; and (iii) after step (ii), directing the flushing fluid under pulsed pressure and superimposed ultrasonic frequency so that portions of the shaped tooth root canal not accessible to debridement by the endodontic file are simultaneously liquefied and acoustically debrided of unwanted material.