487颗下颌前牙根管的弯曲情况研究  

Study of Canal Curvatures in 487 Human Mandibular Anteriors.

作　　者：张文[1] 彭彬[1] 陈智[1] 边专[1] 樊明文[1] 

机构地区：[1]武汉大学口腔医学院牙体牙髓科,湖北武汉430079

出　　处：《口腔医学研究》2005年第1期47-49,共3页Journal of Oral Science Research

基　　金："十五"国家科技攻关计划(编号:2004BA720A23)

摘　　要：目的:了解下颌前牙根管弯曲情况。方法:采用间接数字化X线成像技术拍摄487颗下颌前牙的近远中 向和颊舌向X线影像,分析根管的弯曲情况。结果:下颌前牙根管以Ⅰ型为主。26.22%的下颌切牙和31.45%的 下颌尖牙出现近远中向弯曲,7.01%的下颌切牙和18.87%的下颌尖牙出现颊舌向弯曲。下颌切牙Ⅰ型弯曲根管 颊舌向弯曲度(M=15.8°)最大;其弯曲半径(M=4.7mm)和弯曲长度(M=2.6mm)最小。结论:下颌前牙根管的 弯曲情况较复杂,以下颌切牙为甚。Objective: To investigate root canal curvatures in mandibular anteriors. Methods: 487 human mandibular anteriors were examined by indirect digital radiography both from buccolingual and mesiodistal directions. Root canal curvatures were analyed. Results: The major sort of mandibular anterior canal was typeⅠ. 26.22% mandibular incisors and 31.45% mandibular canines curve were in mesiodistal directions, 7.01% mandibular incisors and 18.87% mandibular canines curve were in buccolingual directions. Mandibur curved incisors in typeⅠhad the largest degree of root canal curvature(M=15.8°), and the least radius of curvature(M=4.7 mm) and the least length of the curved part of the root canal(M=2.6 mm). Conclusion: Root canal curvatures in mandibular anteriors are complex, especially in mandibular incisors.

关 键 词：下颌前牙 根管 弯曲 间接数字化X线成像 

分 类 号：R781.05[医药卫生—口腔医学]