摘要
目的:研究上颌第一磨牙(16、26)近中颊根的解剖形态,为临床治疗提供参考.方法:使用透明标本法,将132个离体16、26制成透明牙,观察其近中颊根的牙根外形与根管形态,比较并分析两者间的关系.结果:16、26近中颊根的牙根外形按照融合角度和分叉情况的不同分为4型:Ⅰ～Ⅳ型牙根的百分比依次为40.91%、23.48%、23.48%和12.12%.根管形态按Weine法分为4型:1-1型、2-1型、1-2型、2-2型,发生率依次为32.58%、17.42%、12.12%和37.88%.并对根管的锥度和弯曲角度进行了探讨.结论:16、26近中颊根的牙根外形与根管形态间有着密切的关系,掌握其形态学规律具有重要的临床意义.
AIM：To study the morphyology of the mesiobuccal root of the first maxillary molar, and provide anatomical reference for clinical treatment. METHODS： 132 extracted first maxillary molars were collected and made into transparent specimen. The root forms and the anatomical canal configuration of the mesiobuccal roots were studied Their relationships were analysed. RESULTS ：4 types of root form were found in the mesiobuccal roots of the first maxillary molars. The incidence of root forms was ： type Ⅰ （ 40.91% ） ,type Ⅱ（ 23.48% ） ,type Ⅲ （ 23.48% ） and type Ⅳ （ 12.12% ）. 4 types of canal configuration （ by Weine＇s classification） were also found. The incidence of canal configuration was：type 1 - 1 （32.58%） ,type 2 - 1 （ 17. 42% ） ,type 1 - 2（ 12. 12% ） and type 2 - 2（37.88% ）. The taper and the curvature angle of the root canals were discussed in this paper. CONCLUSION ：There were close correlations between the root form and canal configuration in the mesiobuccal roots of first maxillary molars. This rule has great clinical significance.
出处
《牙体牙髓牙周病学杂志》
CAS
2005年第10期556-558,共3页
Chinese Journal of Conservative Dentistry
关键词
上颌第一磨牙
近中颊根
根管形态
maxillary first molar
mesiobuccal root
canal configuration
