摘要
目的：了解根管系统的形态。方法：采用透明标本法对上、下颌第一、二磨牙分离根的根管系统、管间侧支、侧支根管及根尖分歧观察。结果：将第一、二磨牙根管形态分为５种类别，即Ⅰ类：单口单孔，Ⅱ类：单口双孔，Ⅲ类：双口单孔，Ⅳ类：双口双孔，Ⅴ类：多口多孔，并与王惠芸学者的分类相比较，发现下颌第二磨牙近中根Ⅱ、Ⅲ、Ⅳ类根管之和高达８３６５％（其中２－１型占６９１８％）明显高于王氏双根管的出现率，有高度的显著性差异（Ｐ＜００１）。结论：下颌第二磨牙近中根的根管多为Ⅲ类（２－１型）双根管的出现率很高。
OBJECTIVE:To understand the canal system morphology.METHOD:To make use of transparent specimen method to obserce root canal system,lateral canal,transverse anastanose,apical deltas.RESULTS:The canal morphology of the first and second molars was classified into 5 types.(type Ⅰ:single opening and single apical foramen,type Ⅱ:single opening and two apical foramen,type Ⅲ:two opening and single apical foramen,type Ⅳ:two opening and two apical foramen,type Ⅴ:multiple opening and multiple foramen).It was found that type Ⅱ,Ⅲ,Ⅳ in total of mesial root of the mandibular second molar made up 83 65%.There was significant difference as compared with Wang Huirun( P <0 01).CONCLUSION:The mesial canal of the mandibular second molar is mainly type Ⅲ(2-1 canals) and the incidence of the bicancal is very high.
出处
《九江医学》
1999年第1期4-7,共4页
Jiujiang Medical Journal
关键词
分离根
根管系统
解剖形态学
磨牙
root canal system
the first and second molar/anatomy morphology
isolated root
