Endosonic endodontics: the ultrasonic synergistic system.

A biotechnological approach using ultrasound has led to the development of a method of root canal therapy in which effective debridement, shaping, irrigation and disinfection of the root canal are easily and quickly completed. This is achieved by a handpiece and a file both energized by ultrasound. A flow-through component enables an irrigation solution to pass along the file into the canal system. The ultrasonically energized file activates the irrigant facilitating solvent, cleansing and disinfecting actions within the root canal system. The energized file is able to debride the canal wall with great facility in an extremely rapid and simple fashion. Progress in metallurgical bonding has enabled a diamond coated file to be developed which gives efficient and rapid preparation of the root canal. Use of this combination of ultrasound, flow-through irrigation and diamond-coated files enables the dentist to perform endodontic treatment expeditiously while adhering to biologic principles.