显微CT技术研究下颌第二前磨牙分支根管的形态  

Research of Branch Canal in Mandibular Second Premolars with Micro-CT

作　　者：周荣华[1] 周效禹[1] 徐婷[1] 范兵[1] 

机构地区：[1]武汉大学口腔医学院牙体牙髓二科,湖北武汉430079

出　　处：《口腔医学研究》2012年第9期954-955,958,共3页Journal of Oral Science Research

基　　金：国家自然科学基金面上项目(编号:81070821)

摘　　要：目的:采用显微CT技术研究下颌第二前磨牙分支根管的形态特征。方法:收集100颗离体下颌第二前磨牙,通过显微CT扫描及三维重建技术筛选出含有分支根管的标本,并对分支根管的发生率、分布、及开口方向等特征进行定量分析。结果:共60颗下颌第二前磨牙含有分支根管,出现率为60%。分支根管分布在根尖1/3为82.35%,其开口在颊侧的发生率为20.59%,舌侧为16.67%。结论:下颌第二前磨牙根管系统复杂,了解其分支根管形态及规律,对提高根管治疗成功率具有重要意义。Objective： To investigate the morphology of branch canals in mandibular second premolars with Micro --CT. Methods： 100 mandibular second premolars were scanned by Micro--CT. After reconstruction, the specimens with branch canals were selected and the incidence of branch canals were calculated, and the location, and direction of opening of branch canals were studied. Results： The incidence of branch canals was 60%. 82. 35% of branch canals located at apical 1/3, and the 20.59% of the exit openings was found at buccai side, and 16.67% was at the lingual side. Conclusion： The root canal morphology of mandibular second premolar was quite complex, and the knowledge of its detailed morphology would help improve the success rate of root canal therapy.

关 键 词：下颌第二前磨牙 分支根管 显微CT技术 

分 类 号：R781.05[医药卫生—口腔医学]