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通过对123例无牙颌患者TMJDS的调查认为无牙颌类似于自然牙列有较高的TMJDS发病率,全无牙组为28.6％,单颌全无牙组为31.3％。无牙颌TMJDS以TMJ弹响最常见,下颌运动偏斜及翼外肌触诊敏感次之,但TMJ及有关区域疼痛较少发生。髁状突在关节凹内的位置两侧不对称也为其显著特征。而头痛及眼、耳部症状与TMJDS无明显关系。认为这些特点与全无牙后及义齿修复后(牙合)型、(牙合)力及功能运动的变化有关。
In a study of 123 TMJDS patients with edentulous jaws, edentulous jaws had a similar incidence of TMJDS compared with natural dentition. The total toothless group was 28.6% and the maxillary total toothless group was 31.3%. TMJDS edema TMJ snapping the most common, mandibular movement and pectoral palpation sensitive second, but less pain in TMJ and related areas. The position of the condyle in the joint recess on both sides of the asymmetry is also its salient features. The headache and eyes, ear symptoms and TMJDS no significant relationship. These characteristics are considered to be related to changes in occlusal, occlusal force and functional motor after denture and denture restoration.