TMD患者咬合接触情况与牙弓宽度的测量分析

Measurement and Analysis of Patients with TMD on the Occlusal Contact and Arch Width

目的:通过测量和比较正常人群与TMD患者在牙尖交错位时的咬合接触情况及牙弓宽度情况,探讨这2个解剖特征与TMD发病的相关性。方法:收集120个临床病例分为2组,A组TMD患者50例,B组正常人群(对照组)70例,通过对2组人群的咬合接触情况、牙弓宽度进行测量分析,探讨这2个解剖特征与TMD发病的相关性。结果:牙尖交错位时,TMD患者的无咬合接触牙齿数高于正常人群;牙弓宽度较正常人群窄(P﹤0.05)。结论:TMD发病与咬合接触少,牙弓宽度窄这2个解剖特征有关。

Objective： To investigate relevance between the two anatomical characteristics and the incidence of patients with TMD by measuring and comparing occlusal contact which is in intercuspal position and arch width between the normal population and patients with TMD.Methods： There were 120 clinical cases in this study.They were divided into 2 groups.Group A is 50 patients with TMD,Group B is 70 normal populations as control group.To investigate relevance between the two anatomical characteristics and the incidence of patients with TMD by measuring and comparing occlusal contact and arch width between the normal population and patients with TMD.Results： The number of no occlusal contact teeth which are in intercuspal position is higher than the normal population,and patients with TMD have narrower arch width than the normal population（P﹤0.05）.Conclusion： The incidence of TMD contacts with the characteristics of less occlusion and narrower arch width.