颞下颌关节紊乱病 (Temporomandibulardisor ders,TMD)是口腔颌面部常见病 ,分为咀嚼肌紊乱疾病 ,关节结构紊乱疾病 ,关节炎性疾病 ,骨关节病4类。其发病原因尚未完全阐明 ,一般认为与精神因素、免疫因素、关节负荷过重、关节解剖因素等有关。近年来随着对分子生物学方面的研究 Temporomandibular disordered dersitis (TMD) is a common disease in oral and maxillofacial region and is divided into masticatory muscle disorders, disorders of joint structure, arthritic diseases and osteoarthritis. The cause of the disease has not been fully elucidated, generally believed that with the spirit of factors, immune factors, joint overload, anatomical factors such as joints. In recent years, with the molecular biology research