两组成人正畸患者颞下颌关节紊乱表现的对比研究

THE COMPARATIVE STUDY OF TEMPOROMANDIBULAR DISORDERS BETWEEN TWO GROUPS OF ADULT MALOCCLUSIONS.

目的 :观察两实验组的错畸形类型和颞下颌关节紊乱表现存在何种差异。方法 :112名 18- 2 9岁成人正畸患者根据主诉被分为两实验组 ,因关节不适而就诊的实验Ⅰ组和因美观要求而就诊的实验Ⅱ组。实验Ⅰ组 5 0人 ,男性 19人 ,女性 31人 ;实验Ⅱ组 6 2人 ,男性 2 2人 ,女性 40人。每位患者治疗前均作详尽的正畸临床检查、颞下颌关节临床检查、并拍摄开、闭口薛氏位片。结果 :1 实验Ⅰ组TMD发生率明显比Ⅱ组高 ,分别占 72 %和 2 5 81% ,P <0 0 0 5。 2 实验Ⅰ组中安氏Ⅱ、Ⅲ类患者占绝大多数 ,共占 84% ;而实验Ⅱ组安氏Ⅰ类患者占多数 ,5 1 6 2 % ,P <0 0 0 5。 3 两实验组依安氏分类TMD发生率大小顺序排列均为 :安氏Ⅱ类 1分类、安氏Ⅲ类、安氏Ⅱ类 2分类、安氏Ⅰ类。结论 :1 某些严重错畸形如 :后牙反、开、下颌偏斜、深覆盖、严重拥挤伴深覆 (按TMD发生率大小顺序排列 )较易发生TMD。 2 夜磨牙。

Objective:[WT5”BZ][ST5”BZ]To observe the differences between the two groups in their malocclusion types and temporomandibular disorders displays.[WT5”HZ][ST5”HZ]Method:[WT5”BZ][ST5”BZ]One hundred twelve adults with malocclusions aged from 18 to 29 years old were divided into two groups according to their different main complaints.Group 1 included 50 patients (19 males,31 females) who complained temporomandibular area uncomfortable.Group 2 included 62 patients(22 males,40 females)who complained their malocclusions only.Each patient had a clinic examination and a TMJ X ray films before treatment.[WT5”HZ][ST5”HZ]Results:[WT5”BZ][ST5”BZ]1 The TMD frequency in Group 1(72%) was much higher than Group 2(25 81%),(P<0 005).2.In Group 1,84% of patients exhibited Class Ⅱ or Ⅲ type while most of group 2(51 62%)showed Class Ⅰ type,(P<0 005).3.In both groups,Class Ⅱ 1 type was the most frequent malocclusion that showed TMD;Class Ⅲ type was the secondary;Class Ⅱ 2 and Class Ⅰ type was the next.[WT5”HZ][ST5”HZ]Conclusions:[WT5”BZ][ST5”BZ]1.Some types of severe malocclusions such as posterior corssbite,openbite,asymmetrical mandibular morphology,deep overjet,severe anterior crowding with deep overbite (in order)were more often accompanied with TMD.2.Bruxism,teeth wear and mandible traumas in childhood were mostly related to TMD. [WT5”HZ][ST5”HZ]