切牙管形态学特征的CBCT测量分析

doi:10.13701/j.cnki.kqyxyj.2020.07.019

摘要/Abstract

摘要： 目的: 使用CBCT对国人切牙管(Incisive canal,IC)的形态学特征及其唇侧骨板厚度(Labial bone thickness,LBTs)进行测量分析,并评估年龄、性别、上颌中切牙缺牙状态对IC形态及LBTs的影响。方法: 收集2017年1月~2019年1月至温州医科大学附属口腔医院种植科就诊的500名患者CBCT数据。利用NNT软件对IC形态及LBTs进行测量分析。同时,对年龄、性别、上颌中切牙缺牙状态与IC形态及LBTs的关系进行统计学分析。结果: CBCT测量分析显示IC形态特征变异较大,33.56%为圆柱形,27.15%为锥形,15.78%为沙漏形,10.00%为漏斗形,12.26%为香蕉形,1.25%为树枝形。矢状面上IC长度以及LBTs在男女之间有显著差异(P<0.01)。不同年龄组间LBTs存在明显统计学差异(P<0.01)。另外,不同缺牙状态间IC长度以及LBTs存在明显的统计学差异(P<0.05)。结论: CBCT能够精确显示IC的三维形态,有助于临床医生对上颌前牙区进行详尽的术前评估,避免术中损伤鼻腭神经而造成并发症。女性,老年患者以及上颌中切牙缺失患者切牙管变异较大,临床医师在术前应更加仔细评估并采取更多的预防措施。

关键词: 切牙管, CBCT, 唇侧骨板厚度

Abstract: Objective: To evaluate the morphological characteristics of the incisive canal (IC) in Chinese population in three dimensions by cone beam computer topography (CBCT) and to assess the influence of age, gender, and dental status of anterior area on IC and labial bone thickness (LBTs). Methods: CBCT of 500 patients from January, 2017 to 2019 in the Department of Oral Implantolgy of Stomatological Hospital affiliate to Wenzhou Medical University was collected retrospectively. The characteristics of IC and LBTs were examined by NNT software. The correlation of age, gender, and dental status of anterior area with IC and LBTs was evaluated. Results: IC and LBTs showed variation significantly. Morphological of IC showed that 33.56% was cylindrical shape,27.15% was conical shape, 15.78 was hourglass-shape, 10.00% was funnel-shape,12.26% was banana-like shape, and 1.25% was branch-like shape. There was significant difference between gender and length of IC and LBTs in the sagittal section. In addition, different dental status showed significantly difference in the length of IC and LBTs. Conclusion: Three dimensions of IC by preoperative CBCT help clinicians avoid the complication in anterior area during implant surgery. More attention should be pay during implant surgery in female, elderly, and medial incisors defect patient.

Key words: incisive canal, CBCT, labial bone thickness

吴连俊, 姚李韬, 张彩霞, 刘传通. 切牙管形态学特征的CBCT测量分析[J]. 口腔医学研究, 2020, 36(7): 693-697.

WU Lianjun, YAO Litao, ZHANG Caixia, LIU Chuantong. Morphological Characteristics of Incisive Canal by Cone Beam Computer Tomography[J]. Journal of Oral Science Research, 2020, 36(7): 693-697.

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