摘要
Abstract
BACKGROUND:In the process of tooth movement, alveolar bone remodeling process is not only influenced by orthodontic force approach and balance between lip and tongue, but also limited by alveolar bone morphology.
<br> OBJECTIVE:To preliminarily study the morphological characteristics of the incisive alveolar bone in adolescent with skeletal class II malocclusion of different vertical facial skeletal types.
<br> METHODS:Sixty patients with class II malocclusion, aged 11-16 years, were divided into three groups:(1) high-angle group:the angle between the anterior skul base and mandibular plane was>40°, and the angle between the orbitomeatal plane and mandibular plane angle was>32°. (2) Low-angle group:the angle between the anterior skul base and mandibular plane was<29°, and the angle between the orbitomeatal plane and mandibular plane angle was<22°. (3) Average angle group:the angle between the anterior skul base and mandibular plane was≥29°,≤40°, and the angle between the orbitomeatal plane and mandibular plane angle was≥ 22°,≤ 32°. Each group included 20 subjects. Cephalometric films were taken and measured to analyze the morphological characteristics of the incisive alveolar bone with SPSS 17.0.
<br> RESULTS AND CONCLUSION:(1) The thickness of the apical alveolar:the UBP, LBP value and the total thickness of the apical alveolar were significantly different between the three groups (P<0.05). The ULP and LLP values were significant different between the high-angle and low-angle groups (P<0.05). (2) The alveolar height:the UBH, ULH, LBH, and LLH values showed significant differences among the three groups (P<0.05). These findings indicate that the thickness of the labial alveolar bone of the incisor is obviously thinner in the high-angle malocclusion than others, indicating it is very important to prevent the fenestration and bone cracking. The labial alveolar bone of the low-angle malocclusion is thicker, and therefore, the adduction range of the anterior teeth is wider.关键词
组织构建/骨组织工程/骨性Ⅱ类错牙合/垂直骨面型/切牙区牙槽骨分类
医药卫生
