MANDIBULAR SECOND PREMOLAR WITH THREE CANALS: WITH A THERAPEUTIC APPROACH- TWO CASE REPORTS

Background: Before starting any endodontic treatment, the possibility of additional canals should be considered. Based on studies, the incidence of three canals in the mandibular second premolar is 0.1-0.4%. Normally. it consists of a canal in lingual aspect and two canals in the buccal aspect. Case report: In the present study, two cases with three-canal mandibular second premolar were investigated and treated. Conclusion: Through precise radiography assessment by straight tube angulalion and developing changes in the horizontal angle, a 40 degrees change in the horizontal x-ray tube angulation. and opening an optimal access hole. etc. first the three canals in the second premolar were detected and then successfully treated.