口腔疾病防治2017，Vol.25Issue(5)：316-319,4.DOI:10.12016/j.issn.2096-1456.2017.05.008
上颌第二乳磨牙根管数目的临床研究
Clinical study of root canal numbers in maxillary second primary molars
摘要
Abstract
Objective To investigate the root canal numbers of maxillary second primary molars. Methods 216 maxillary second primary molars from 204 children aged 3-8 years old were selected. All the teeth need to do the root canal therapy. After opening the pulp chamber, the root canal were examined and determined with small size K file and 17%ethylene diaminetetraacetic acid (EDTA). Hand instruments were used for root canal preparation and then zinc-oxide iodoform paste was used for filling. Results 216 maxillary second primary molars, 122 teeth had three root canals (56.5%), and 94 teeth had four root canals (43.5%). The incidence of second mesiobuccal canal (MB2) was 41.2%. There was no correlation between the incidence of the MB2 canal and gender and tooth position. Conclusion The root canals of maxillary second primary molars had more variations, and there was a high incidence of the second mesiobuccal canal.关键词
上颌第二乳磨牙/根管数目/近中颊根第二根管/根管治疗/根管变异Key words
Maxillary second primary molars/Root canals number/Second mesiobuccal canal/Root canal therapy/Root canal variation分类
医药卫生引用本文复制引用
贾瑞芝,杨东梅,尚佳健..上颌第二乳磨牙根管数目的临床研究[J].口腔疾病防治,2017,25(5):316-319,4.基金项目
北京市科技计划项目(Z151100004015031) （Z151100004015031）
