To study the development over 20 years of signs and symptoms of temporomandibular disorders (TMD) in an epidemiologic sample and to analyze possible correlations between these signs and symptoms and some other variables.The original group comprised 135 randomly selected 15-year-old subjects who were examined clinically and by means of a questionnaire for signs and symptoms of TMD. The examination was repeated after 5, 10, and 20 years by the same methods. After 20 years, when the original group had reached the age of 35 years, 124 individuals (92
作者：T, Magnusson；I, Egermark；G E, Carlsson
来源：Journal of orofacial pain 2000 年 14卷 4期
