Dealing with lower premolars

The first step to reach the success of root canal therapy is o have a good knowledge of the root and root canal morphology. This helps us to locate all the canals and properly clean, shape, and obturate the canal spaces in all dimensions. Slowey has suggested that mandibular first premolars, often called as “Endodontist's enigma,” may present the greatest difficulty of all teeth to perform successful endodontic treatment due to their unpredictable anatomy with a wide variety of morphological rarities. A recently published systematic literature review by Kottoor et al. summarized that lower bicuspids commonly have a single root (97%), with the mandibular first premolars being twice more likely to present with two canals (23.55%) than second premolars (12.64%).…