Micoscopic Diagnosis and Treatment of the Premolars With Three Canals

Objectives: to recognized that incomplete instrumentation and cleaning of root canals will lead to failure in root ¨Ctreated teeth. Methods:before root canal treatment is performed, the clinician should be aware of the configuration of the pulp space of the tooth that is to be treated. Frequently, root canals are left untreated because the clinician fails to identify their presence, particularly in teeth that have anatomical variations or additional root canals. Traditionally , additional root canals have been detected by clinician examination of the floor of the pulp chamber, and sometimes found radiographically. More recently microscopy examination of the pulp chamber using endodontic microscopy has assisted the identification of extra canals. Results:it is presented a case that deals with the successful treatment of the mandibular first and second premolars with each three canals. Conclusions:each canal was prepared by rotary instruments using crown-down technique and obturated with vertically condensed gutta-purcha technique.