Abstract: A device for performing endodontic procedures such as root canals by utilizing ultrasonic energy to debride the root canal space. The device includes a modified shaft assembly and a stainless steel hypodermic needle which concentrates the ultrasonic energy at the tip of the needle. The shaft assembly further includes a threaded housing for attaching the shaft assembly to an ultrasonic generator, an angled shaft attached to the threaded housing, and a hub attached to the end of the angled shaft opposite the threaded housing for reducing the diameter of the bore when the hub is tightened. The angled shaft further includes a bore passing through its length and an aperture passing through the outer wall of the shaft. The aperture is positioned near the larger of the two angles formed by the angled shaft and is oriented in the direction of the hub. The needle is inserted into the aperture and passes through the bore in the angled shaft until it exits the shaft through the hub.

Abstract: A device for performing endodontic procedures such as root canals by utilizing ultrasonic energy to debride the root canal space. The device includes a modified shaft assembly and a stainless steel hypodermic needle which concentrates the ultrasonic energy at the tip of the needle. The shaft assembly further includes a threaded housing for attaching the shaft assembly to an ultrasonic generator, an angled shaft attached to the threaded housing, and a hub attached to the end of the angled shaft opposite the threaded housing for reducing the diameter of the bore when the hub is tightened. The angled shaft further includes a bore passing through its length and an aperture passing through the outer wall of the shaft. The aperture is positioned near the larger of the two angles formed by the angled shaft and is oriented in the direction of the hub. The needle is inserted into the aperture and passes through the bore in the angled shaft until it exits the shaft through the hub.