兰州市成人离体前磨牙的解剖形态研究

发布时间：2018-09-03 17:31

【摘要】：目的研究兰州市部分成人离体前磨牙的解剖外形及其根管的解剖形态特点。方法收集兰州市成人离体前磨牙190颗,其中上颌第一前磨牙54颗,上颌第二前磨牙46颗,下颌第一前磨牙50颗,下颌第二前磨牙40颗,用精度为0.02 mm的游标卡尺测量收集到的前磨牙的牙体各项长度指标,通过锥形束CT资料观察根管形态及类型,使用SPSS 13.0软件行统计学分析。结果获得兰州市部分成人离体前磨牙解剖形态和根管类型数据,牙体各项指标测量值均呈正态分布,牙根长度和牙体长度差异较大,前磨牙的根管形态以Ⅰ型和Ⅳ型为主。结论前磨牙解剖外形特征总体稳定,但根长和牙长的变异情况较大,在临床操作中应予以注意。
[Abstract]:Objective to study the anatomic appearance and anatomic characteristics of root canals of adult premolars in Lanzhou. Methods 190 adult premolars were collected, including 54 maxillary first premolars, 46 maxillary second premolars, 50 mandibular first premolars and 40 mandibular second premolars. The tooth length of premolar was measured by Vernier calipers with precision of 0.02 mm. The shape and type of root canals were observed by conical CT data. SPSS 13.0 software was used for statistical analysis. Results the anatomic morphology and root canal type data of some adult premolars in Lanzhou City were obtained. The measured values of tooth parameters were normal distribution. The root length and tooth length of premolar were different. The root canal morphology of premolar was mainly type 鈪，

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