Abstract: An ultrasonic dental instrument or tip is disclosed for performing endodontic procedures. The instrument has a hub adapted to be operatively coupled to the output of an ultrasonic handpiece and a shank portion extending from the hub. A first portion of the shank extends in a generally axial direction from the hub and tip portion extends from the first portion. The shank has a bend therein between the first portion and the tip portion ranging between about 90° and about 140°. One embodiment of the tip has an enlarged, bulbous free end, with the latter having an end face cross sectional area larger than the cross sectional area of the tip portion proximate the enlarged free end. The enlarged free end has an abrasive coating thereon so that upon activation of the instrument by the transducer, the tip portion and the enlarged free end vibrates in a plane including the shank and tip portions.