摘要
目的：研究不同前型者下颌关节点和切点轨迹的特征。方法：用新型下颌三维运动轨迹描记仪ＭＴ－１６０２测量了５５名不同前牙覆覆盖者下颌咀嚼运动关节与切点的轨迹，并进行了比较分析。结果：下颌双侧关节咀嚼轨迹与切点轨迹之间具有普遍的正相关性；深覆者关节与切点轨迹的侧向幅度均小于正常（Ｐ＜０．０１）；额状面轨迹窄于正常（Ｐ＜０．０１）；前牙深覆盖者的轨迹与正常者无差别（Ｐ＞０.０５）。结论：深覆是影响下颌咀嚼运动形态的主要因素，修复时应尽量避免前牙深覆的出现。
Objective:To determine the characteristic chewing patterns of persons with different oc- clusal patterns;Methods:The supersonic run-time mandibular movement recorder MT-1602 was used and 55 volunteer students with normaI occlusion,deep overbite or deep overjet were tested.Results:The persons with deep overbite had more shallow and vertical chewing patterns than normal ones(P< 0.01),while the chewing patterns of deep overjet persons had no differences with that of the normal (P> 0.05).The chewing traces of both condylar points had a significant correlation with that of incisive point.Conclusion:Deep overbite of anterior teeth is the rnain factor affecting the mandibular chewing movements,Therefore,the deep overbite of anterior teeth should be avoided in prosthodontic treat- ments to prevent from TMJDS.
出处
《北京医科大学学报》
CSCD
1996年第4期277-277,共1页
Journal of Peking University(Health Sciences)
基金
国家自然科学基金
关键词
咀嚼
颞下颌关节病
Headings Mastication
Temporomandibular joint/physiol
Range of motion,articular
Malocclusion
