腭前部第三腭皱区域的软硬组织特征研究  

Assessment of Soft and Hard Tissue Characteristics of Anterior Hard Palate at Level of Third Palatal Ruga

作　　者：叶子桐 唐倩 尹清 杨陆一 YE Zitong;TANG Qian;YIN Qing;YANG Luyi(Department of Orthodontics,Stomatological Hospital of Jilin University,Changchun 130021,China)

机构地区：[1]吉林大学口腔医院正畸科,吉林长春130021

出　　处：《口腔医学研究》2025年第4期314-319,共6页Journal of Oral Science Research

基　　金：吉林省卫生与健康技术创新项目(编号:2020J050)。

摘　　要：目的:通过测量第三腭皱区域骨质厚度、骨皮质厚度、黏膜厚度,探究第三腭皱(third palatal ruga,TR)作为临床微螺钉种植体(mini-screw implant anchorage,MIA)植入标志点的合理性。方法:纳入2019年1月~2023年1月间在吉林大学口腔医院正畸科就诊的错(牙合)畸形患者共30例,平均年龄(18.7±6.5)岁,收集锥体束CT(cone beam computed tomography,CBCT)数据及口扫数据,在BLUE SKY PLAN软件实现匹配。在整合模型上测量腭中缝、腭中缝旁3 mm、腭中缝旁6 mm矢状界面上TR前2 mm(TRA)、TR、TR后2 mm(TRP)位点的黏膜厚度、骨皮质厚度及骨质厚度。通过方差分析(analysis of variance,ANOVA)和多组独立样本秩和检验(Kruskal-Wallis H检验)来比较不同位点黏膜厚度、骨皮质厚度、骨质厚度的差异。采用Tukey检验及Mann-Whitney U检验进行两两比较。结果:在同一冠状截面上,由远中向近中腭部骨质由厚变薄,腭中缝处骨质厚度显著减少(P<0.05),腭中缝处骨皮质厚度显著小于腭中缝旁骨皮质厚度(P<0.017),腭中缝与腭中缝旁6 mm黏膜厚度差异具有统计学意义(P<0.017)。在同一矢状截面上,骨质厚度在腭中缝区域由前向后增加(P<0.017),在腭中缝旁区域前后向骨质厚度差异不明显(P>0.05),骨皮质厚度由前向后变化不显著(P>0.05),黏膜厚度由前向后变化不显著(P>0.017)。结论:在进行MIA植入时,TR区域除腭中缝外均可以选择8 mm长度MIA,其中腭中缝旁3 mm可以选择颈部长度1.5 mm MIA,腭中缝旁6 mm可以选择颈部长度2 mm MIA。在TR区域腭中缝进行MIA植入时,CBCT检查是必要的,以确保植入过程中不会损伤鼻腭管。在TR区域腭中缝旁进行MIA植入时,可以认为该区域是安全区域,从而减少CBCT检查次数。TR作为标志点,与牙邻接点相比,更接近MIA植入安全区域,更容易定位植入位点。Objective:To evaluate the feasibility of third palatal ruga as a reliable reference for clinical mini-screw implant anchorage(MIA)implantation by measuring bone thickness,cortical bone thickness,and mucosa thickness in the third palatal ruga region.Methods:Thirty patients with malocclusion,mean age(18.7±6.5)years,who attended the Department of Orthodontics at Stomatology Hospital of Jilin University between January 2019 and January 2023 were selected.All patients completed the collection of CBCT(cone beam computed tomography)volume and maxillary digital models.The data were analyzed using BLUE SKY PLAN software.Mucosa thickness,were measured on the integrated model at third palatal ruga(TR),and 2 mm anterior and 2 mm posterior to the third palatal ruga(TRA and TRP)at different sagittal planes(mid-palatal suture plane,3 mm lateral,and 6 mm lateral).Results:In the same coronal plane,bone thickness varied from distal to proximal mid-palate,with a significant reduction at the mid-palatal suture(P<0.05).Cortical bone thickness at the mid-palatal suture was significantly less than that adjacent to the mid-palatal suture(P<0.017).The difference in the mucosa thickness between the mid-palatal suture and the 6 mm lateral to the mid-palatal suture was also statistically significant(P<0.017).In the same sagittal plane,bone thickness increased from anterior to posterior in the region of the mid-palatal suture(P<0.017).The difference in anterior-posterior bone thickness in the area adjacent to the mid-palatal suture was not significant(P>0.05),bone cortical thickness did not change significantly from anterior to posterior(P>0.05),and mucosal thickness did not change significantly from anterior to posterior(P>0.017).Conclusion:For MIA implantation,8-mm-length MIAs were available in the third palatal ruga region except for the mid-palatal suture,in which neck-length 1.5 mm MIAs were available 3 mm lateral to the mid-palatal suture,and neck-length 2 mm MIAs were available 6 mm lateral to the mid-palatal suture.CBCT examinations

关 键 词：微螺钉种植体 第三腭皱 骨质厚度 骨皮质厚度 

分 类 号：R783.5[医药卫生—口腔医学]