KHOẢNG CÁCH TỪ CÁC CHÂN RĂNG HÀM LỚN HÀM TRÊN ĐẾN SÀN XOANG HÀM TRÊN PHIM CTCB

Abstract

The maxillary sinus is the largest paranasal sinus, the anatomical relationship between maxillary molars and maxillary sinus floor is clinically significant for preventing oroantral communication. Evaluating the distance from molar roots to the sinus floor on cone beam computed tomography (CBCT) is clinically significant for dental treatment planning. This cross-sectional descriptive study was conducted on 80 patients (320 teeth, 933 roots) who underwent CBCT at the Department of Odonto-Stomatology, Bach Mai Hospital to determine the distance from maxillary molar roots to the sinus floor. Results showed that the mean distance ranged from 0.25mm to 1.15mm. The mesiobuccal root of tooth 16 had the greatest distance (1.15 ± 2.77mm). The proportion of roots protruding into the sinus (Type 2) ranged from 25.0% to 41.8%, highest at the distobuccal root of tooth 17. A total of 27/160 second molars (16.9%) had only 2 roots. The 18-30 age group showed a tendency toward more negative distances. The findings demonstrate that the anatomical relationship between molar roots and the sinus floor is highly variable, CBCT is essential for pre-operative risk assessment.