Abstract
We treated a case of jaw deformity with pernicious biting habit and other symptoms.
The patient was a 48-year-old female, who had been attempting to improve prognathism with conscious edge-to-edge occlusion. Consequently, she had some physical symptoms, that is unstable occlusion, mandibular malposition, headache and pain of the lingual margin. Analysis of the integration of electromyogram (tapping and clenching) had shown that she could bite stronger with the anterior position of the mandible than with edge-to-edge occlusion. She used a modified, inclined bite plate which guided the mandible forward. After one month, she acquired stable occlusion and lingual pain was cured. After that, 44 were extracted and anterior segmental osteotomy by modified Kole's method was performed. The integration of electromyogram was similar to controls, at three months after operation. Now, she has been followed up without symptoms for10months since operation.
