The relationship between symptoms of temoromandibular joint dysfunction(TMJD) and stomatognathic habit was studied in 500 adolescents(mean age 22.45). The severity of TMJD was determined by using a self-reported anamnestic questionnaire composed of 10 questions regarding common TMJD. The index of oromandibular habit was determined by using a self-reported anamnestic questionnaire composed of 17 questions. There was a positive correlation(p<0.01) between the index of TMJD and index of stomatognathic habit. The most frequent symptoms were clicking sounds from the TMJ(37.4%) and a feeling of pain in the jaws(33.3%). The most frequent stomatognathic habit were a chin support(69.8%) and one side chewing(68.0%).