口腔医学研究

口腔医学研究 ›› 2021, Vol. 37 ›› Issue (9): 850-854.DOI: 10.13701/j.cnki.kqyxyj.2021.09.017

• 口腔影像学研究 • 上一篇    下一篇

闽南地区人群上颌第二磨牙融合根的CBCT研究

相艳1,2, 杨绿丽2,3, 林垚1,2*   

  1. 1.厦门医学院附属口腔医院牙体牙髓病一科 福建 厦门 361000;
    2.厦门市口腔疾病诊疗重点实验室 福建 厦门 361000;
    3.厦门医学院附属口腔医院口腔颌面影像科 福建 厦门 361000
  • 收稿日期:2021-03-04 出版日期:2021-09-28 发布日期:2021-09-16
  • 通讯作者: *林垚,E-mail:linyaoyao727@126.com
  • 作者简介:相艳(1986~ ),女,黑龙江人,主治医师,硕士,主要从事牙体牙髓病临床诊疗工作。
  • 基金资助:
    福建省自然科学青年创新项目 (编号:2020D034)厦门市医疗卫生指导性项目 (编号:3502Z20214ZD1275)厦门市医疗卫生科技计划项目 (编号:3502Z20199086)

Prevalence and Characteristics of Fused Root at Maxillary Second Molars in Southern Fujian Population by Cone-beam Computed Tomography

XIANG Yan1,2, YANG Lvli2,3, LIN Yao1,2*   

  1. 1. Endodontics Ⅰ Stomatological Hospital of Xiamen Medical College, Xiamen 361000, China;
    2. Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361000, China;
    3. Department of Oral Radiology, Stomatological Hospital of Xiamen Medical College, Xiamen 361000, China
  • Received:2021-03-04 Online:2021-09-28 Published:2021-09-16

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摘要： 目的: 通过CBCT扫描分析闽南地区人群上颌第二磨牙融合根分布规律及其根管变异特点。方法: 随机选取191例患者353颗上颌第二磨牙的CBCT影像资料,分析融合根、融合根管的发生率、融合根分型及其对称性等情况。结果: 上颌第二磨牙融合根发生率为36.3%,其中Ⅰ型发生率最高(25%),其次是Ⅳ型(22.7%),Ⅲ型(1.6%)发生率最低;融合根中融合根管发生率为69.5%,Ⅶ型发生率100%,其次是Ⅵ型(90.5%),Ⅴ型(22.2%)发生率最低。男女之间在融合根、融合根管、C型根管及融合根对称性发生情况比较差异无统计学意义(P>0.05),但不同年龄组在融合根管发生比例上却有统计学差异(P<0.05), 融合根管的发生与年龄存在一定的关系。结论: 上颌第二磨牙融合根及融合根管发生率较高,根管解剖变异多,临床操作中应关注此类情况。

关键词: 上颌第二磨牙, 融合根, 变异根管, 锥形束CT

Abstract: Objective: To analyze the distribution of fused maxillary second molars in southern Fujian and the characteristics of root canal variation using CBCT scanning. Methods: CBCT images of 353 maxillary second molars from 191 patients were randomly selected to analyze the prevalence of fused roots and root canals, the types of fused roots, and their symmetry. Results: Maxillary second molar root fusion rate was 36.3%, of which type Ⅰ was the highest (25%), followed by type Ⅳ (22.6%), and type Ⅲ the lowest (1.6%). Within fused rooted teeth, the presence of merged canals was 69.5%, the prevalence of type Ⅶ was 100%, followed by type Ⅵ (90.5%), and the lowest prevalence was 22.2%. There were no statistically significant differences between sexes on fused rooted maxillary second molars, merged canals, C-shaped canals, and symmetrical distribution of the fused root(P>0.05). However, there were statistically significant differences in the proportion of root canal fusion in different age groups(P<0.05). The prevalence of root canal fusion was related to age. Conclusion: The prevalence of root fusion and root canal fusion in maxillary second molars is high, and the anatomical variations in the root canal are many, which should be cautious in the clinical operation.

Key words: maxillary second molars, fused root, variation root canal, cone-beam computed tomography