A Case Report of Retreatment of a Maxillary First Premolar with Three Root Canals
Abstract：In root canal treatment, the anatomical variation of the root canal system in the maxillary first premolar is relatively common, with most cases having two root canals, followed by single-rooted canals, while the occurrence rate of three-rooted canals is relatively low [3]. Clinically, root canal treatments are mostly focused on the first two anatomical types. However, it cannot be ignored that the anatomical variation of three-rooted canals greatly increases the difficulty of root canal treatment in the maxillary first premolar: first, the exploration of root canals is difficult, and there is a high risk of missing root canals; second, the course and position relationship of the variant root canals are complex, often accompanied by severe curvature and calcification, which increases the difficulty of root canal preparation [4]; in addition, the complicated root canal morphology is not conducive to root canal filling operations. This case report describes the diagnostic process, operational points, and precautions for the treatment of a maxillary first premolar with three root canals, aiming to provide references for the treatment of complex anatomical variations.
Keywords：Maxillary first premolarAnatomical variationRoot canal missedRoot canal retreatment
Publication Date：2025-08-28
Online Publishing Date：2025-10-15(First online date of this platform, not the publication date of the document)
Pages：4( 468-471 )