维吾尔族成人下颌神经管在CBCT中的影像分析

Imaging analysis of the mandibular canal for Uygur adults using cone-beam computed tomography( CBCT)

目的利用CBCT初步探讨维吾尔族成年人下颌神经管分支的发生率及分型。方法收集2014~2016年就诊于新疆医科大学第一附属医院口腔科维吾尔族患者214例,利用CBCT评估其下颌管及有无分支,并进行统计学分析。结果 214例(428侧)维吾尔族患者,51例(23.8%)观察到下颌管分支,其中女31例(14.48%),男20例(9.34%)。发现下颌管双分支1例,最为常见的下颌管分支为前行管(第Ⅲ类),发生率为8.88%;其次是磨牙管(第Ⅰ类),发生率为8.41%;牙管(第Ⅱ类),发生率为4.67%;最后是颊舌管(第Ⅳ类),发生率为1.87%。结论利用CBCT能够很好地观察下颌管有无分支这一解剖结构。

Objective To clarify the incidence and patterns of mandibular canal branches in Uygur adults. Methods 214 Uyghur adult patients were collected from 2014 to 2016 in the Department of Stomatology of the First Affiliated Hospital of Xinjiang Medical University. Cone-beam computed tomography （CBCT） was used to evaluate their mandibular canals and branches, and statistical analysis was carried on. Results Of all the 214 cases （428 sides）, mandibular bifid canal was observed in 51 （23.8%） including 31 females （ 14.48% ） and 20 males （9.34%）. Mandibular dual branch was found in one case. The most frequently encountered type of bifid canal was the forward canal （8.88%）, followed by the retromolar canal （8. 41 % ）, the dental canal （4.67%） and the buccolingual canal （ 1.87% ）. Conclusion CBCT can be applied to observe if a mandibular bifid canal exists.