摘要
目的 研究安氏Ⅱ类1分类错（牙合）患者矫治前中后的咬合功能变化,分析评价固定矫治技术对牙颌功能的影响.方法 选择26名安氏Ⅱ类1分类错（牙合）患者,运用T-scan Ⅱ型咬合测量分析系统,记录其在矫治前、中、后牙尖交错位的（牙合）力（TOF）、（牙合）力不对称指数（AOF）、（牙合）接触点数（NOC）、（牙合）接触面积不对称指数（AOA）、（牙合）力中心点位置（COF）、（牙合）力中心点最大位移（MMCOF）及（牙合）干扰指数（OII）七项指标.结果 与矫治前相比,矫治中TOF及NOC下降,而矫治后升高（P＜0.05）,矫治后AOF、AOA、COF、MMCOF及OII均明显下降（P＜0.01）.结论 安氏Ⅱ类1分类错（牙合）患者正畸治疗后,咬合功能增强,明显消除了（牙合）不对称等不利因素,咬合功能更加平衡协调.
Objective To investigate the change of occlusal function of patients with Class Ⅱ division 1 malocclusion after orthodontic therapy. Methods T-scan Ⅱ was used in 26 orthodontic patients with class Ⅱ division 1 malocclusion. Bite force, occlusal contacts were measured before,during and after orthodontic therapy. The data of total occlusal force （TOF）, asyrmmetry index of occlusal force （AOF）, number of occlusal contacts （NOC）, asymmetry index of occlusal area （AOA）,center of force （COF）, maximal movement of COF（MMCOF） and occlusal interference index （OII）were recorded. Results Compared with pre-orthodontics, the TOF and NOC during treatment were smaller, while the TOF and NOC were higher after treatment（P〈0. 05）. AOF, AOA, COF,MMCOF and OII were significantly decreased （P〈0. 01 ）after orthodontic treatment. Conclusions Total occlusal force and occlusal contacts were improved in Class Ⅱ patients after orthodontic treatment.
出处
《中华口腔正畸学杂志》
2010年第3期136-139,共4页
Chinese Journal of Orthodontics
基金
基金项目：上海市卫生局课题（编号044105）
