安氏Ⅱ类1分类和2分类错畸形患者上中切牙区牙槽骨的三维形态分析  

Morphological characteristics of upper alveolar bone around central incisor in Class Ⅱ division 1 and division 2 malocclusion on cone-beam CT

作　　者：夏文倩 顾永佳 高美琴 

机构地区：[1]南通市口腔医院正畸科,江苏南通226001

出　　处：《上海口腔医学》2016年第1期68-71,共4页Shanghai Journal of Stomatology

基　　金：南通市社会事业科技创新与示范课题(HS2013033)

摘　　要：目的 :应用锥形束CT(cone-beam computed tomography,CBCT)三维成像测量正常及安氏Ⅱ类1分类和2分类错畸形患者上切牙区牙槽骨形态,分析其三维结构以及与牙根的关系,评价其对正畸计划制订及治疗的影响。方法:选取20例正常患者、20例安氏Ⅱ类1分类和20例安氏Ⅱ类2分类错畸形患者,拍摄治疗前CBCT影像,通过INVIVO 5.0图像处理软件对图像进行三维重建,测量上切牙唇腭侧的牙槽骨厚度。利用SPSS19.0软件包对数据进行配对t检验。结果:除安氏Ⅱ类2分类腭侧根尖牙槽骨厚度与正常相比无显著差异外,其他各组数据之间均有显著差异。结论:正畸治疗中应综合考虑牙位置与牙槽骨形态的相互关系,不可过度依赖牙移动来代偿骨性不调,避免不恰当的牙移动导致牙根吸收、牙槽骨附着降低、骨开窗、骨穿孔等不良反应。PURPOSE： During orthodontic treatment, the incisors in patients with ClassⅡ division 1 and division 2 malocclusion showed different clinical features, which determine the different ways to move the teeth to the suitable position. This study analyzed the morphology of alveolar bone around upper central incisor with cone-beam CT （CBCT）. METHODS： The sample consisted of 20 normal malocclusion and 40 patients with Class Ⅱ malocclusion （division 1 20 cases and division 2 20 cases）. CBCT images before orthodontic treatment were reconstructed by INVIVO 5.0 image processing software. Paired t test was used for statistical analysis with SPSS 19.0 software package. RESULTS： At the upper central incisors, the alveolar thickness between normal malocclusion and ClassⅡ division 1 and division 2 malocclusion had significant difference except the palate thickness between normal malocclusion and Class Ⅱ division 2 malocclusion （P〈0.05）. CONCLUSIONS： Orthodontist should consider the relationship between the teeth position and alveolar bone shape comprehensively, choose the correct plan in order to avoid root desorption, alveolar bone loss, fenestration and other adverse reactions.

关 键 词：安氏Ⅱ类1分类 安氏Ⅱ类2分类 锥形束CT 上前牙区牙槽骨厚度 

分 类 号：R783.5[医药卫生—口腔医学]