郝作琦++++++吴冰++++++刘宝刚++++++丁文++++++杨磊++++++王新华++++++杨帆

    [摘要] 目的 探讨上颌第一磨牙MB2(近中颊根第二根管)根管的治疗效果。 方法 选择2010年6月～2015年12月在火箭军总医院礼士路门诊部口腔科确诊的57例(57颗)上颌第一磨牙MB2患者为研究对象。术前拍X线片，术中仔细探查和确诊MB2，预备根管，消毒根管，试尖拍X线片，侧压法根管充填，术后(根管充填完成后)拍X线片确认MB2充填到位。 结果 术后12个月复查，成功51颗，失败6颗，成功率为89.47%。 结论 术前术后拍X线片(偏角投照法)、术中仔细探查以及较为完善的根管治疗能够有效治愈上颌第一磨牙MB2患者。

    [关键词] 上颌第一磨牙；MB2；根管治疗

    [中图分类号] R781.341 [文献标识码] A [文章编号] 1673-7210(2017)07(c)-0141-04

    [Abstract] Objective To investigate the clinical efficacy of treatment for the second root canal (MB2) in the maxillary first molar. Methods A total of 57 patients (57 teeth) with MB2 in the maxillary first molar treated in Department of Stomatology， Lishilu Clinic， PLA Rocket Force General Hospital from June 2010 to December 2015 were enrolled in this study. Before the operation X-ray film was used， and careful exploration and diagnosis of MB2 were necessary during the operation， then prepared and disinfected the root canal， filled the root canal using lateral pressure combined with sharp X-ray film. After the operation MB2 were filled in place according to X-ray film. Results 12 months after the review ......