The results of treatment in a 19-year-old female patient who had received palatoplasty 14 years ago was evaluated by Y-G psychological test after pharyngoplasty, speech therapy and Kosteêka operation for treating psychological problems and speech disorders due to cleft palate. The patient at first visit made a communication with other people except her family only by writing or her sister's speeking for her. At least, the patient could establish her economical, social life by speech therapy with counselling, articulatory therapy and surgical orthodontic therapies. The course of treatments was summarized as follows:
1. Treatment for glottal stop as an articulation disorder was insufficient because of incomplete nasopharyngeal closure.
2. Modified Perkos method of pharyngoplasty was performed for improvement of incomplete nasopharyngeal closure, then a surgical improvement of skeletal deformities and antagonistic occlusion was attempted by Kosteêka's method. Although the former operation alone was insufficient, the combination with the later sufficiently improved her esthetics and speech.
3. In the speech therapy with counselling and articulatory therapy, her psychological problems were improved, that is, she became able to communicate by speaking through being insufficient. Finally, the patient could establish her economical, social life.
4. Y-G psychological test revealed type AC before treatment and type D after treatment. Comparison of Co, A, S levels between before and after the treatment, showed a striking difference. The results of Y-G psychological tests coincided with therapeutic results in this patient.