ĐẶC ĐIỂM HÌNH THÁI ỐNG TUỶ CỦA NHÓM RĂNG CỬA VĨNH VIỄN HÀM DƯỚI Ở NHÓM NGƯỜI TRƯỞNG THÀNH TỪ 20 – 25 TUỔI

Abstract

Background: Permanent mandibular incisors exhibit diverse root canal morphology, with a significant proportion having two roots. A detailed understanding of this structure aids in effective endodontic treatment. Objectives: To determine the root canal morphology of permanent mandibular incisors based on Vertucci’s classification using cone-beam computed tomography (CBCT) in adults aged 20-25 years. Materials & Methods: A cross-sectional study was conducted on 160 mandibular incisors. The teeth were processed, imaged using CBCT, and analyzed for: (1) Number of root canals, (2) Classification of the root canal system according to Vertucci, (3) Cross-sectional shape of the root canal in Vertucci Type I incisors at different thirds of the root. Results: In central incisors, the proportions of teeth with one and two root canals were equal. In lateral incisors, 61.25% had two root canals, higher than the 38.75% with one root canal. Vertucci’s classification: Type III was the most common (49.38%), followed by Type I (44.37%), Type V (3.80%) and Type VII (2.50%) were less frequent, Types II, IV, and VIII were not observed. Cross-sectional shape in Type I canal system: A circular shape was predominant in the coronal and apical thirds. An elongated oval shape was most common in the middle third. This study provides crucial data for optimizing endodontic treatment of mandibular incisors.