口腔疾病防治2018，Vol.26Issue(2)：113-116,4.DOI:10.12016/j.issn.2096-1456.2018.02.009
锥形束CT观测下牙槽神经管分支
The observation of bifid mandibular canals using cone beam computed tomography
摘要
Abstract
Objective To investigate the prevalence of bifid mandibular canals (BMC), and to measure their diame-ter and angle. Methods CBCT images of 500 patients were used for this study. The incidence and types of bifid man-dibular canals were recorded according to a modified classification of Naitoh: Ⅰ, retromolar canal;Ⅱ, dental canal;Ⅲ, forward canal;Ⅳbuccolingual canal. The diameter and angle between the accessory canal and the main mandibular ca-nal were recorded. Results Bifid mandibular canals were found in 32.2%of the 1000 hemi-mandibles, with the inci-dence rate of 52.17%, 36.02%, 6.21%, 5.59%in TypeⅠ,Ⅱ,Ⅲ,Ⅳrespectively. There are 90 cases of the mandibular branch with a diameter greater than or equal to the backbone 1/2, and 100 cases that are less than 1/2 of the backbone. The angle between the mandibular branch and the trunkⅠ,ⅡandⅢwere 50.21° ± 22.25°、28.81° ± 11.5° and 13.50° ± 2.39° respectively. Conclusion Bifid mandibular canals were observed at a relatively high incidence using CBCT, and the most common type was the retromolar canal. It is suggested CBCT should be taken before mandibular surgery to give an accurate evaluation of bifid mandibular canals.关键词
锥体束CT/下颌神经/下颌神经管/分支/影像Key words
Cone-beam computed tomography/Mandibular nerve/Mandibular nerve canal/Bifid/Radiogra-phy分类
医药卫生引用本文复制引用
戴昱,张国志,孙海鹏..锥形束CT观测下牙槽神经管分支[J].口腔疾病防治,2018,26(2):113-116,4.基金项目
深圳市科技计划项目(JCYJ20160422154812784) （JCYJ20160422154812784）
