Dens invaginatus: another use for the ultrasonic.

Dens invaginatus is an anomaly which has numerous and complex forms. Whenever endodontic therapy involving such a tooth becomes necessary, the clinician must be aware of the various treatment modalities available to facilitate proper care. Presented in this case report is a maxillary lateral incisor having the anomaly dens invaginatus in which both surgical and nonsurgical treatment was required. The surgical phase was facilitated through the use of ultrasonic instrumentation.