The purpose of this study is to investigate the physical disorders of CTDs prevalent among dentists who are exposed to job risk factors. The average total work time per week of subjects(N=117) was 44$pm$6 hours, work time with one patient was 20$pm$10 minutes, and their daily tasks were consisted of extraction, filling, preparation, nerve amputation of tooth. The results of this study are as follows: 1) The discomfort test shows that dentists suffer from discomfort/pain in upper extremities. 2) The work environment test related to CTDs shows that female dentists feel more uncomfortable in the height of chairs than male dentists. 3) The symptom test shows that female dentists suffer from more pain in fingers or wrists at night than male dentists.