RETREATMENT OF A MANDIBULAR PREMOLAR WITH TWO CANAL AND PERIAPICAL PATHOSIS USING TRIPLE ANTIBIOTIC PASTE

Endodontic failure often results from persistent microorganisms , debris in untreated or inadequately prepared canals.Mandibular first premolars commonly present anatomical variations, increasing the risk of missed canals and complicating treatment.This case describes the retreatment of a mandibular first premolar in which a previously undetected canal and an associated periapical lesion were identified. After thorough chemo mechanical preparation, as a intracanal medicament Triple antibiotic paste was placed.The medicament effectively reduced microbial load and promoted progressive healing. The canal system was then obturated and restored,with follow-up radiographs confirming favorable periapical repair. This report highlights the need for careful assessment of anatomical variations in mandibular premolars and demonstrates that triple antibiotic paste can serve as a valuable adjunct in retreatment cases with persistent periapical infection.