骨性Ⅱ类高角患者正畸治疗前后牙槽骨形态特征的锥形束CT回顾性研究  

Morphological Characteristics Researches of Anterior Alveolar Bone in Hyperdivergent Skeletal ClassⅡMalocclusion by Cone Beam CT:A Retrospective Study

作　　者：邓建清 杨柳 张晓磊 DENG Jianqing;YANG Liu;ZHANG Xiaolei(Department of Stomatology,The Eighth Affiliated Hospital Sun Yat-Sen University,Shenzhen 518000,China)

机构地区：[1]中山大学附属第八医院(深圳福田)口腔科,广东深圳518000

出　　处：《口腔医学研究》2025年第1期40-44,共5页Journal of Oral Science Research

基　　金：深圳市科技计划资助(项目编号:JCYJ20220530144410023)。

摘　　要：目的:通过锥形束CT(cone beam computed tomography,CBCT)测量分析骨性Ⅱ类高角患者正畸治疗前后上下颌切牙区骨开窗、骨开裂发生率差异及牙槽骨改建特征。方法:选取骨性Ⅱ类高角患者46例,男18例,女28例,年龄(16.9±2.2岁),测量其正畸治疗前后上下颌切牙区牙槽骨形态特征,统计分析骨开窗、骨开裂转归及牙槽骨改建情况。结果:治疗前后骨开窗发生率分别为6.39%和3.00%,差异有统计学意义(P<0.05),骨开裂发生率分别为22.55%和23.91%,差异无统计学意义(P>0.05);治疗后切牙区舌腭侧骨开裂缺损深度增加,牙槽骨厚度和面积减少,差异均有统计学意义(P<0.05)。结论:骨性Ⅱ类高角患者正畸治疗后,上下颌切牙区唇侧牙槽骨增生修复,骨开窗、骨开裂状况改善;舌腭侧牙槽骨压迫吸收,牙槽骨厚度及面积减少,骨开裂发生率增加。Objective:To explore the incidence rates of fenestration and dehiscence,and the bone remodeling characteristics of the anterior alveolar bone before and after orthodontic treatment of hyperdivergent skeletal ClassⅡmalocclusion by cone beam computed tomography(CBCT).Methods:Forty-six cases with hyperdivergent skeletal ClassⅡmalocclusion were selected[male:18 cases,female:28 cases,age:(16.9±2.2)years].The alveolar bone of the incisors of both jaws were measured to calculate the incidence rates of fenestration and dehiscence,and the morphological characteristics of the alveolar bone before and after orthodontic treatment.Results:The comparison of fenestration incidence before and after treatment revealed a statistically significant reduction,with rates of 6.39%prior to treatment and 3.00%following treatment(P<0.05).Conversely,the incidence of dehiscence remained relatively stable,with pre-treatment and post-treatment rates of 22.55%and 23.91%,respectively,exhibiting no statistically significant difference(P>0.05).Notably,post-treatment evaluations indicated a statistically significant increase in the depth of lingual and palatal dehiscence defects,accompanied by a significant decrease in the thickness and area of alveolar bone(P<0.05).Conclusion:Orthodontic treatment in patients with hyperdivergent skeletal ClassⅡmalocclusion has led to the restoration of labial bone defects in both the upper and lower incisors,resulting in a reduced incidence rate of fenestration and dehiscence.However,it is noteworthy that the lingual and palatal sides of the alveolar bone experience a reduction in bone thickness and area,along with an increase in dehiscence.

关 键 词：骨性Ⅱ类高角 正畸治疗 骨开窗 骨开裂 

分 类 号：R783.5[医药卫生—口腔医学]