中国北方地区人群上颌第二磨牙融合根锥形束CT研究  

Prevalence and Characteristics of Fused Roots at Maxillary Second Molars in Northern Chinese Population by Conebeam Computed Tomography

作　　者：卢冠凡 闵艺 韩琦 李宇红 LU Guan-fan;MIN Yi;HAN Qi;LI Yu-hong(Department of Endodontic,Hospital of Stomatology,Qingdao 260000,China;Hospital of Stomatology,Wuhan University,Wuhan 430079,China;Hospital of Stomatology,Shandong University,Jinan 250012,China)

机构地区：[1]青岛市口腔医院牙体牙髓科,山东青岛260000 [2]武汉大学口腔医院牙体牙髓科,湖北武汉430079 [3]山东大学口腔医学院牙体牙髓科,山东济南250012

出　　处：《口腔医学研究》2018年第11期1177-1181,共5页Journal of Oral Science Research

基　　金：国家自然科学基金(编号:81371130);武汉大学教学发展专项研究(2017)

摘　　要：目的:研究中国北方地区人群CBCT图像中上颌第二磨牙融合根分布规律及其内根管的形态特点。方法:从2014年1月～2015年12月青岛市口腔医院因治疗需要拍摄CBCT患者中筛选符合条件者,记录患者的性别、年龄、上颌第二磨牙融合根分型及其内根管的交联情况,将数据分组并进行统计学分析。结果:324名患者纳入实验,139人存在上颌第二磨牙融合根,共计222颗磨牙。研究表明不同年龄段融合根发生率有差异(P<0.05),其中35～50岁组发生率最高(70.9%);男女之间融合根发生率无统计学差异;融合根整体呈对称性分布;48.6%(108/222)存在根管交联,不同融合根内根管交联特点不尽相同。结论:上颌第二磨牙融合根在中国北方地区人群中发生率高,掌握其分布以及形态学特点对临床治疗具有参考价值。Objective:To investigate the patterns and distributions of roots and root canals of fused roots at maxillary second molars(MSMs)in a northern Chinese population using cone-beam computed tomography(CBCT).Methods:The patients requiring CBCT inspections for diagnosis or treatment at Stomatology Hospital of Qingdao were selected.The gender and age of patients with fused root at MSMs were recorded and the configurations of root and canal of fused root at MSMs were probed.The collected data were analyzed to discover the root fusion variety in respect of genders,ages,and the patterns of fused root canal.Results:Totally 324 patients were involved in this study.The fused roots at MSMs appeared in 139 patients.The number of fused teeth was 222.The prevalence of each section of ages was different(P<0.05),mostly in the age section of 35 to 50(70.9%).However,there was no significant difference between male and female,or right and left side.Following the 108 root canal mingling of 222 fused roots at MSMs,it was found the different patterns of root fusion inclined to different types of root canal mingling.Conclusion:MSMs commonly have a high prevalence of root fusion and canal mingling in a northern Chinese population.Understanding the various root and root canal patterns of fused root at MSMs is beneficial to the clinical practice.

关 键 词：上颌第二磨牙 融合根 锥形束CT 

分 类 号：R781.05[医药卫生—口腔医学]