线性(牙合)总义齿固位稳定性的研究

Abstract

目的通过对线性(牙合)总义齿固位的定量检测及患者的主观评判,验证线性(牙合)总义齿的(牙合)型设计在静态及动态下对义齿固位与稳定性的影响.方法利用Hz-1型固位力测试仪对25例线性(牙合)总义齿修复患者进行上、下颌总义齿静态固位力的测试,同时针对功能状态下的主观固位感觉进行问卷调查.结果线性(牙合)上颌总义齿在两种状态下均具有良好的固位;剩余牙槽嵴骨吸收严重的线性下颌总义齿修复患者的静态固位力值低,但主观感觉固位良好;患者戴用线性(牙合)总义齿的主观固位感觉明显优于原解剖式(牙合)总义齿.结论对于剩余牙槽嵴骨吸收严重的患者,线性(牙合)总义齿在功能状态下可获得良好的义齿固位和稳定性,有利于义齿功能的发挥.

To learn retention and stability of linear occlusal complete dentures by investigating the subjective feelings of patient and the value of retention force.Static retention forces of maxillary and mandibular dentures were measured for 25 patients wearing linear occlusal dentures by using Hz-1 retention dynamometer. The subjective feelings of patients in functional state were gained simultaneously through questionnaire.Linear occlusal dentures demonstrate good retention in static and dynamic state. Among patients with severe resorption of residual ridge (RRR), mandibular linear occlusal dentures (shown good retentive subjective feelings) demonstrate significantly smaller retention force than those with slight or medium degree of RRR. There is no correlation between the subjective feelings and the values of retention forces of mandibular dentures. The subjective feelings of patients wearing new linear occlusal dentures are much better than that of old anatomic occlusal dentures.Linear occlusal dentures improve the performances of dentures by enhancing their stability during mastication movement.