青少年骨性Ⅱ类错▉畸形上颌后牙区微种植体植入的安全性探讨

doi:10.19439/j.sjos.2018.04.007

上海口腔医学 ›› 2018, Vol. 27 ›› Issue (4): 370-375.doi: 10.19439/j.sjos.2018.04.007

青少年骨性Ⅱ类错▉畸形上颌后牙区微种植体植入的安全性探讨

廖仟, 王云霁, 张维奕, 周迪, 范小平

重庆医科大学附属口腔医院,口腔疾病与生物医学重庆市重点实验室, 重庆市高校市级口腔生物医学工程重点实验室,重庆 401147

收稿日期:2017-10-09 修回日期:2018-01-12 出版日期:2018-08-25 发布日期:2018-10-09
通讯作者: 范小平,E-mali:fanxp666@163.com
作者简介:廖仟（1990-）,男,硕士,住院医师, E-mali:1131608386@qq.com
基金资助:
重庆市第二批科技项目渝北财教(2014)42号:; 2016年重庆高校创新团队建设计划资助项目（CXTDG201602006）; 重庆市高校市级口腔生物医学工程重点实验室资助项目

Safe zones of the maxillary posterior area for mini-implant insertion in adolescents with skeletal Class II malocclusion

LIAO Qian, WANG Yun-ji, ZHANG Wei-yi, ZHOU Di, FAN Xiao-ping

Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education. Chongqing 401147, China

Received:2017-10-09 Revised:2018-01-12 Online:2018-08-25 Published:2018-10-09

摘要/Abstract

摘要： 目的: 运用锥形束CT（cone-beam CT,CBCT）测量分析骨性Ⅱ类错青少年上颌第二前磨牙与第一磨牙之间不同截面的最小根间距及颊侧骨皮质表面与根间最窄处距离,为临床上微种植体的安全植入提供参考。方法: 选取44例骨性Ⅱ类错青少年患者的CBCT资料,其中,男23例,女21例,平均年龄14.07岁。取上颌第二前磨牙与第一磨牙根间的9个水平截面,每个截面相距1 mm,分别测量每个截面的最小根间距及颊侧骨皮质表面与根间最窄处距离。采用SPSS 20.0 软件包对测量结果进行统计学分析。结果: 每个截面最小根间距和颊侧皮质骨表面与根间最窄处的距离,男女之间无显著差异（P>0.05）,左右两侧无统计学差异（P>0.05）;左侧根尖部的骨皮质表面与根间最窄处距离,与SNA角呈正相关关系;最小根间距离由釉-牙骨质界（cementoenamel junction,CEJ）至根尖逐渐增大,各截面的颊侧皮质骨表面与根间最窄处距离的均值均大于5 mm。结论: 经CBCT获取了骨性Ⅱ类错青少年上颌第二前磨牙与第一磨牙之间各截面最小根间距和颊侧骨皮质表面与根间最窄处距离,了解了其分布规律,为临床上微种植体的安全植入提供了参考。

关键词: 骨性Ⅱ类错█, 青少年, 微种植体, 锥形束CT

Abstract: PURPOSE: The purpose of this study was to measure the interradicular spaces between the maxillary second premolar and first molar in adolescents with skeletal Class Ⅱ malocclusion, so as to obtain scientific knowledge for placing mini-implants. METHODS: Forty four cone-beam computed tomography(CBCT) images were selected, which consisted of 23 males and 21 females (average age, 14.07 years) with skeletal Class II malocclusion. CBCT was used to measure the closest interradicular distance and the shortest distance from cortical bone surface to the narrowest interradicular space apically at 1-mm intervals in 9 axial images from the cementoenamel junction(CEJ). SPSS 20.0 software package was used for statistical analysis. RESULTS: There was no significant difference in the closest interradicular distance and the shortest distance from cortical bone surface to the narrowest interradicular space between the left and right side (P>0.05), and no significant difference was found between males and females (P>0.05); The shortest distance from cortical bone surface to the narrowest interradicular space of the left apical area had positive correlation with SNA angle; The closest interradicular distance became wider toward the apical area,and the average distance of the shortest distance from cortical bone surface to the narrowest interradicular space was over 5mm in all sections. CONCLUSIONS: The distribution of interradicular spaces between the maxillary second premolar and first molar of adolescents with skeletal Class II malocclusion is learned using CBCT. These data might provide a reference for placing mini-implants.

Key words: Skeletal Class II malocclusion, Adolescents, Mini-implants, Cone-beam computed tomography

中图分类号:

R783.5

廖仟, 王云霁, 张维奕, 周迪, 范小平. 青少年骨性Ⅱ类错▉畸形上颌后牙区微种植体植入的安全性探讨[J]. 上海口腔医学, 2018, 27(4): 370-375.

LIAO Qian, WANG Yun-ji, ZHANG Wei-yi, ZHOU Di, FAN Xiao-ping. Safe zones of the maxillary posterior area for mini-implant insertion in adolescents with skeletal Class II malocclusion[J]. Shanghai Journal of Stomatology, 2018, 27(4): 370-375.

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青少年骨性Ⅱ类错▉畸形上颌后牙区微种植体植入的安全性探讨

Safe zones of the maxillary posterior area for mini-implant insertion in adolescents with skeletal Class II malocclusion

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