Endodontic therapy in a mandibular first premolar with two root canals.

Abstract

Missed canal is one of the problems in endodontic teatment of the tooth with variation in root canal anatomy. It may lead to endodontic failure. Approximately 25 % of mandibular first
premolar teeth are considered to have more than one root canal.

The aim of this case report was to present the successful treatment of left mandibular first premolar with two canals. Knowledge of variation in root canal antomy of mandibular premolar, clinical examination, interpretation of radiograph, proper modification of the access opening and conventional endodontic procedure were also described.