150例患者下颌中切牙根管系统的锥形束CT分析

目的：运用锥形束CT分析下颌中切牙的根管数目和形态特征,为临床治疗提供参考。方法 筛选就诊于上海交通大学医学院附属第九人民医院的150例患者的CBCT图像。其中,男79例,女71例,共295颗下颌恒中切牙,对根管的数目以及形态进行分析。结果 61%的下颌中切牙具有1个根管。具有双根管的下颌中切牙占39%,其中8.8%的牙有独立的2个根尖孔。结论 本组下颌中切牙具有双根管的比例为39%,与其他有关不同人种下颌中切牙双根管的研究结果一致。

Study of the root canal characteristics of mandibular central incisors in 150 patients using cone-beam computed tomography

PURPOSE: To investigate the root canal characteristics of mandibular central incisors using a cone-beam computed tomography (CBCT) technique. METHODS: One hundred and fifty patients (79 males and 71 females) receiving CBCT scan at Shanghai Ninth People’s Hospital were recruited into this study. A total of 295 image samples of mandibular central incisors were obtained and analyzed in terms of the number and type of root canals. RESULTS: The majority of mandibular central incisors had a single canal (61% possessed a Type I canal system). Although 39% of the roots possessed two canals, only 8.8% had two separate apical foramina. CONCLUSIONS: The prevalence of two canals of mandibular central incisors in this case series was 39% and is within the range reported by previous studies on case series of different racial origin.