西安地区就诊Ⅲ类错颅面类型垂直向构成分析

Vertical Composition Analysis of Craniofacial Types of Xi'an Class Ⅲ Malocclusion

目的:分析西安地区就诊Ⅲ类错颅面类型垂直向的构成。对临床制定合理的矫治方案提供一定的依据。方法:采用计算机辅助X线头影测量技术,对第四军医大学口腔医院正畸科2003～2008年就诊的Ⅲ类错患者的颅面类型进行回顾性研究,统计分析Ⅲ类错垂直向的构成。结果:替牙期就诊Ⅲ类患者垂直向主要表现为高角或均角,低角较为少见。在恒牙早期患者及恒牙期患者中垂直向主要表现为均角型(V2),低角型(V3)和高角型(V1)较少见。结论:西安地区就诊Ⅲ类错垂直向颅面类型在不同年龄段的构成存在一定差异,但总的来说均角(即垂直向发育正常)仍是各时期的主要表现形式。

Objective, To analyze the Xi＇an class Ⅲmalocclusion vertical craniofacial type composition. Methods： From 2003-2008 in the Department of Orthodontics, the Fourth Military Medical University Dental Hospital, class Ⅲpermanent dentition malocclusion was studied, using computer--assisted cephalometric X technology, re- spectively. According to the vertical composition, the patients were divided into 3 groups, high-angle group （V1） both angle group （V2）low--angle group （V3）. We analysed the class Ⅲatients with craniofacial morphology in the vertical composition, Results： The dentition in patients with skeletal class Ⅲwere vertical angle to the principal, or both for high： performance angle, and low angle was very rare. In the early permanent dentition and permanent dentition, both vertical angle （V2） was mainly, and low-- angle （V3） and high-- angle （V1） were relatively rare. Conclusion.. Among class Ⅲmalocclusion in Xi＇an area, vertical craniofacial types in the composition of different a- ges were different, but in general; both angle was still the principal manifestation at each period.