422颗上颌第一前磨牙牙根及根管解剖形态的观察  

Observation of the roots and root canals of 442 maxillary first premolars

作　　者：程晓莉[1] 翁雨来[1] 

机构地区：[1]上海交通大学医学院附属第九人民医院·口腔医学院牙体牙髓科,上海市口腔医学研究所·上海市口腔医学重点实验室,上海200011

出　　处：《上海口腔医学》2008年第5期525-528,共4页Shanghai Journal of Stomatology

摘　　要：目的:了解上颌第一前磨牙的牙根和根管形态,为临床治疗提供解剖学依据。方法:收集422颗上颌第一前磨牙,按性别分组,统计分析各牙根形态出现率;采用透明牙技术观察分析根管形态,根据Vertucci分类法,统计分析各根管形态的出现率;采用SPSS11.5软件包对数据进行χ2检验。结果:(1)422颗标本中,单根牙占57.36%,双根牙占41.47%,三根牙占1.18%。男性组分别为33.58%、62.68%和3.73%。女性组分别为66.67%、33.33%,没有三根牙。2组间有显著性别差异(P<0.01)。(2)415颗透明牙标本中,共观察到9种根管形态。Ⅰ型占10.12%,Ⅱ型占10.60%,Ⅲ型占6.02%,Ⅳ型占56.63%,Ⅴ型占12.05%,Ⅵ型占1.93%,Ⅶ型占0.72%,Ⅷ型占1.45%,Ⅸ型占0.48%。单根管(Ⅰ型)占10.12%,双根管(Ⅱ～Ⅶ型)占87.95%,三根管(Ⅷ,Ⅸ型)占1.93%。结论:上颌第一前磨牙牙根形态多样并有显著性别差异,而且根管形态类型复杂。充分了解其解剖形态,对临床治疗具有重要意义。PURPOSE： To investigate the root and root canal anatomical features of maxillary first premolars in 422 teeth. METHODS： 422 maxillary first premolars were collected to statistically analyze the root types by sex and to observe the root canals by clearing technique; Vertucci＇s classification was adopted to get the percentage of each root canal type. The data were analyzed with SPSS11.5 software package. RESULTS： （1）Significant gender difference was found in 422 teeth in terms of the percentage of one root（total 57,36%; male 33.58%; female 62.68%）, two roots（total 41,47%; male 62.68%; female 33.33%） and three roots（total 1.18%; male 3.73%; female 0%） （P〈0.01）. （2）In the 422 transparent specimens of the teeth, totally 9types of root canals were discovered with the percentage of type Ⅰ （10.12%）, Ⅱ （10.60%）, Ⅲ（6.02%）, Ⅳ （56.63%）,Ⅴ（12.05%）, Ⅵ（1.93%）, Ⅶ（0.72%）,Ⅷ（1.45%）,Ⅸ（0.48%）. CONCLUSIONS： Understanding of the various and gender-different morphology of the roots and complex root canals of maxillary first premolars, is of great value for the diagnosis and root canal therapy.

关 键 词：上颌第一前磨牙 根管形态 透明牙标本观察法 

分 类 号：R781[医药卫生—口腔医学]