离体上颌磨牙髓室底形态的比较研究  

A study of the morphology of the pulp floor of the extracted maxillary first and second molars

作　　者：黄靖[1] 王雅敏[2] 郭莲[1] 姚隆浩[1] 

机构地区：[1]上海交通大学附属第九人民医院口腔解剖教研室,上海200011 [2]上海交通大学附属第九人民医院浦东分院

出　　处：《口腔材料器械杂志》2008年第3期127-128,138,共3页Chinese Journal of Dental Materials and Devices

摘　　要：目的通过对上海地区成年男女上颌第一磨牙和第二磨牙髓室底形态的观察及根管口距离的测量,用相对直观的方法确定根管口的基本位置,并对所测上颌第一磨牙和第二磨牙的数据进行统计学分析和比较,为临床医生在根管治疗时提供更为丰富的解剖学资料,旨在提高临床根管治疗的成功率。方法取上海地区成年人离体牙:上颌第一磨牙38颗,上颌第二磨牙39颗,以釉牙骨质界为基准横截牙颈部且完整暴露根管口在放大镜下观察其髓室底的形态并测量根管口间的距离。结果"Y"形髓室底沟:上颌第一磨牙占50.00%,上颌第二磨牙占58.97%;"7"型分别为:36.84%和25.64%;根管口的间距:腭根管口至近中颊根管口和远中颊根管口的距离上颌第一磨牙为4.92和3.96,上颌第二磨牙为3.53和2.92;近远中根管口的距离分别为2.01和1.68。结论临床可沿髓室底沟根据腭侧根管口和颊侧根管口的间距寻找上颌磨牙的根管,进行有效的根管治疗。Objective To provide more comprehensive anatomical information for dentists to increase their success rate of the root canal therapy. Methods Teeth of local adults in Shanghai were extracted： maxillary first molars 39 maxillary second molars 38. The teeth were horizontally sectioned at CEJ, the pulp floor completely exposed to observe the morphology of the pulp floor and measure the distance within orifices under magnifying glasses. Results ＂Y＂-shaped groove of pulp floor： Maxillary first molars 48.72 %; Maxillary second molars60.53%;＂ 7＂-shaped groove of pulp floor, maxillary first molars 35.90%; maxillary second molars26.32%. Distances of orifices： Maxillary first molars, palatal roots to mesial buccal roots was 4.92, palatal roots to distal buccal roots 3.96, mesial to distal roots 2.01. Maxillary second molars.palatal roots to mesial buccal roots was 3.53, palatal roots to distal buccal roots 2.92. Mesial to distal roots 1.68. Conclusion The orifices of maxillary molars were clinically detected, by distances between palatal and buccal orifices along grooves of pulp floor to improve the rate of the root canal therapy.

关 键 词：上颌磨牙 根管口 髓室底沟 

分 类 号：R781.05[医药卫生—口腔医学] R783.5[医药卫生—临床医学]