华西口腔医学杂志2012，Vol.30Issue(1)：57-60,4.DOI:10.3969/j.issn.1000-1182.2012.01.014
显微CT与数字成像系统观察下颌第一前磨牙根管形态的比较研究
Comparative study of root canal morphology of mandibular first premolar by micro-CT and radio visio graphy
李向杰 1刘娜 2刘锐 1董正谋 1刘鲁川 1邓蔓菁1
作者信息
- 1. 第三军医大学大坪医院野战外科研究所 口腔科,重庆400042
- 2. 成都军区总医院 口腔科,成都610083
- 折叠
摘要
Abstract
Objective To compare the consistency of root canal configuration types of mandibular first premolar by using micro-CT and radio visio graphy (RVG). Methods One hundred extracted mandibular first premolars with complete dental root and apex which received no endodontic treatment were randomly selected. Each tooth was radiographed with RVG through a buccolingual and mesiodistal direction, and then scanned with micro-CT and reconstructed. The classifications of the root canal types according to Vertucci's type with the two methods were compared. Results The canal patterns were classified as type Ⅰ (67%), type Ⅲ(3%), type V(18%), type Ⅶ (2%), additional type (10%) with micro-CT and canal patterns as type Ⅰ (71%), type Ⅲ(2%), type V (23%), type Ⅶ (1%), additional type (3%) with RVG. 63% of teeth showed one canal in both micro-CT and RVG. Only 25% of teeth were diagnosed as complex canal by the same canal type in both micro-CT and RVG. The Kappa value between micro-CT and RVG was 0.541 which suggested that the two kinds of methods had intermediate consistency. 82.8% of the premolars with root groove had two or more than two canals. Conclusion Although RVG can basically reflect the root canal system type of the mandibular first premolars in vitro, it offers poor accuracy images to complex root canals. Micro-CT threedimensional images could clearly and precisely display the root canal system morphology of the mandibular first premolars in vitro.关键词
显微CT/数字成像系统/下颌第一前磨牙/根管类型Key words
micro-CT/ radio visio graphy/ mandibular first premolar/ root canal type分类
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李向杰,刘娜,刘锐,董正谋,刘鲁川,邓蔓菁..显微CT与数字成像系统观察下颌第一前磨牙根管形态的比较研究[J].华西口腔医学杂志,2012,30(1):57-60,4.
