基于CBCT及三维重建技术对下颌阻生第三磨牙舌侧骨板厚度及形态的研究  

Study on the thickness and morphology of lingual bone of impacted mandibular third molar based on CBCT and Simplant 3D reconstruction

作　　者：赵君 吴晓波[1,2,3] 刘娜 郝新河[1,2,3] ZHAO Jun;WU Xiao-bo;LIU Na;HAO Xin-he(Hefei Clinical School of Stomatology,Anhui Medical University,Hefei 230001;The Fifth Clinical College of Medicine,Anhui Medical University,Hefei 230022;Department of Oral and Maxillofacial Surgery,Hefei Stomatology Hospital,Hefei 230001;Department of Oral Medicine,The First Affiliated Hospital of Anhui Medical University,Hefei 230022,Anhui Province,China)

机构地区：[1]安徽医科大学合肥口腔临床学院,安徽合肥230001 [2]安徽医科大学第五临床医学院,安徽合肥230022 [3]合肥市口腔医院口腔颌面外科,安徽合肥230001 [4]安徽医科大学第一附属医院口腔科,安徽合肥230022

出　　处：《上海口腔医学》2023年第6期661-667,共7页Shanghai Journal of Stomatology

基　　金：2022年安徽医科大学校科研基金(2022xkj257)。

摘　　要：目的:通过定量测量舌侧骨板厚度,探讨下颌阻生第三磨牙与舌侧骨板厚度的潜在关系,建立舌侧骨板的三维可视化模型。方法:收集合肥市口腔医院数据库中符合研究标准的200例下颌阻生第三磨牙影像资料,通过Simplant Pro软件对不同测量位点的舌侧骨板进行厚度测量和三维重建。采用SPSS 22.0软件包对数据进行统计分析,不同测量位点的舌侧骨板厚度的比较采用秩和检验,将骨板厚度是否为“高危险型”作为结果变量,利用logistic回归对相关因素进行分析。结果:第三磨牙牙根中点处的舌侧骨板相对最薄;多根牙、近中倾斜及远中倾斜、Ⅱ类及Ⅲ类阻生牙牙根中点舌侧骨板更薄(P<0.05);近中及远中倾斜,Ⅱ类及Ⅲ类患牙根尖区舌侧骨板更薄(P<0.05);低位阻生牙中,Ⅲ类患牙易出现牙冠中心位点舌侧骨板变薄(P<0.05)。结论:舌侧骨板厚度与阻生牙牙根数、倾斜方向、阻生类型有关。在阻生牙拔除术中,应考虑上述因素,警惕舌神经、舌侧骨板及周围软组织损伤。PURPOSE:The potential relationship between impacted mandibular third molar and lingual bone thickness was investigated by quantitative measurement of lingual bone thickness,and a three-dimensional visualization model of lingual bone was established.METHODS:Image data of 200 cases of mandibular impacted third molar were collected from the database of Hefei Stomatological Hospital.Thickness measurement and three-dimensional reconstruction of lingual bone at different measurement sites were performed by Simplant Pro software.Statistical analysis was performed using SPSS 22.0 software package,and the comparison of lingual thickness at different measurement sites was performed using rank sum test.Whether the thickness of bone plate was"high-risk type"was taken as the result variable,different related factors were analyzed by logistic regression.RESULTS:The lingual bone at the middle point of the root of the third molar was the thinnest.Multiple teeth,mesio-inclined and dial-inclined teeth,and Class Ⅱ and Ⅲ impacted teeth had thin lingual bone(P<0.05).The mesial and distal inclines were observed,and the lingual bone was thin in the root apical region of the teeth in Class Ⅱ and Class Ⅲ(P<0.05).In the lower impacted teeth,the thin lingual bone at the central crown site was more likely to be found in Class Ⅲ teeth(P<0.05).CONCLUSIONS:The thickness of lingual bone was related to the number of impacted tooth roots,tilt direction and impacted type.In the extraction of impacted teeth,the above factors should be considered,and the injury of lingual nerve,lingual bone and surrounding soft tissue should be vigilant.

关 键 词：CBCT 舌神经 舌侧骨板 下颌阻生第三磨牙 三维重建 

分 类 号：R782.1[医药卫生—口腔医学]