This is to study the presurgical motivation, psychological changes and self satisfaction after the surgical treatment of dentofacial deformities. The subjects were 34 patients that the orthognathic surgeies were rendered and followed-up over 6 months. The results were as followings ; 1. The analysis of MMPI profiles in clinical scale reveals that 8.8%(3 patients) of neurologic type, 2.9% (1 patient) of personality problem type and none of psychotic type, while 88.3% of showed no abnormal findings in psychologic status. 2. The significant differences of personality characteristics were noticed in the Depression(D), Hypochondriasis(Hs), Musculinity-Feminity(Mf) were changed significantly following the orthognathic surgeries.(P<0.05) 3. The self assesment of the esthetic results were satisfactory in 78.6%, while no changes in 14.3%.