口腔医学研究

口腔医学研究 ›› 2017, Vol. 33 ›› Issue (9): 991-994.DOI: 10.13701/j.cnki.kqyxyj.2017.09.020

• 临床研究论著 • 上一篇    下一篇

显微CT法研究中国人上颌第一前磨牙分支根管形态

白雨豪，王芳芳，黎淼，王颖，唐路*   

  1. 首都医科大学宣武医院口腔科 北京 100053
  • 收稿日期:2017-03-05 出版日期:2017-09-20 发布日期:2017-09-27
  • 通讯作者: 唐路,E-mail:lutang@foxmail.com
  • 作者简介:白雨豪(1988~ ),男,北京人,医师,硕士,主要从事牙体牙髓病学的基础与临床研究。
  • 基金资助:
    首都医科大学基础-临床合作基金(编号:17JL28)

Branch Canal Anatomy of Maxillary First Premolars of Chinese People by Micro-CT

BAI Yu-hao, WANG Fang-fang, LI Miao, WANG Ying, TANG Lu*   

  1. Department of Stomatology, Capital Medical University Xuanwu Hospital. Beijing 100053, China.
  • Received:2017-03-05 Online:2017-09-20 Published:2017-09-27

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摘要： 目的:使用显微CT扫描法研究中国人离体上颌第一前磨牙分支根管解剖形态。方法:收集63颗中国人上颌第一前磨牙,使用显微CT扫描并构建根管系统三维可视化模型。观察并记录分支根管、根尖三角区发生情况,分析分支根管发生率、分布和开口特征。结果:共有50颗上颌第一前磨牙含有分支根管,发生率为79.37%。共记录到124个分支根管,其中95.16%发生于根尖1/3。分支根管开口于近中和远中方向的分别为33.06%和23.39%。根尖三角区的发生率为7.94%。结论:上颌第一前磨牙分支根管发生率高,根管系统形态复杂,了解其分支根管发生规律对于提高根管治疗成功率具有重要意义。

关键词: 上颌第一前磨牙, 分支根管, 显微CT技术

Abstract: Objective: To investigate the branch canal anatomy of the maxillary first premolars of Chinese people with micro-CT. Methods:Sixty-three maxillary first premolars were scanned by micro-CT and root canals were visualized by three-dimentional reconstruction. Branch canals and apical delta were recorded. The incidence, distribution and exit opening direction of branch canals were analyzed. Results: Branch canals of 50 teeth were recorded. The incidence of the branch canals was 79.37%. A total of 124 branch canals were recorded, and 95.16% of branch canals were located at the apical third of the root. The direction of the apical foramen of 33.06% branch canals were found at mesial, and the direction of the apical foramen of 23.39% branch canals was at distal side of the root. Incidence of apical delta was 7.94%. Conclusion: The root canal system of maxillary first premolars was complicated, with a high incidence of branch canals. It is important to know the branch canal morphology so as to increase the success rate of root canal treatment.

Key words: Maxillary first premolars, Branch root canals, Micro-CT technique

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