An ultrasonic liquefaction endodontic system having a graspable hand piece includes a contra-angle tip assembly that has an insert and an internal fluid flow passageway. A portion of the fluid flow passageway passes through a C-shaped receiver located at the end of the receiver so that an ultrasonic...http://www.google.com.au/patents/US8043088?utm_source=gb-gplus-sharePatent US8043088 - Endodontic procedure employing simultaneous liquefaction and acoustic debridgement
