离体单根下颌第二恒磨牙的根管特点  

Anatomical character of root canals in one-rooted mandibular second molars

作　　者：汪平[1] 崔恺[2] 王宇[1] 袁渝萍[1] 范继红[1] 刘朝娟[1] 

机构地区：[1]陕西西安市第四军医大学口腔医学院,710032 [2]四川夹江解放军42医院口腔科

出　　处：《实用口腔医学杂志》2005年第2期266-268,共3页Journal of Practical Stomatology

摘　　要：目的:研究单根的下颌第二磨牙的根管形态。方法:通过X线片和临床检查确定根管, 样本从根中1 /3截断以证实X线片和临床检查结果,采用Melton的方法对C形根管分类。结果: 12个牙有C形牙根并且是C形根管,其中 2个牙归为分类Ⅰ, 5个牙为分类Ⅱ, 5个牙为分类Ⅲ。结论:下颌第二磨牙的C形根管在根管的数量和形态有较大变化。Objective:To investigate the root canal anatomy of one-rooted mandibular second molars. Methods:The root canals of 18 one-rooted mandibular second molars were visualized on radiographs and clinical examination, some specimens were cut at the mid-root level and observations were made on the coronal root section. Teeth with C-shaped canal system were categorized by using a modification of Melton classification.Results:12 molars exhibited C-shaped canals.2 molars were classified as category Ⅰ,5 as Ⅱ and another 5 cases as Ⅲ.Conclusions:C-shaped canals in mandibular second molars vary in canal number and shape.

关 键 词：C形根管 下颌第二磨牙 解剖学 

分 类 号：R78[医药卫生—口腔医学]