Many researches had been proved that the effect of intraoral vertical ramus osteotomy (IVRO) to relieve the symptoms of painful temporomandibular joint dysfunction syndrome was significant by repositioning of the condyle head anteriorly and inferiorly. The case report is a male patient who sought the dental advice for relief of TMJ pain when chewing and mouth opening at our OPD. The oral examination found clicking sound, disc displacement with reduction, mouth opening and chewing pain, anterior crossbite and class III malocclusion with mandibular prognathism. We decided to perform IVRO (modification of intraoral vertical ramus osteotomy) and internmaxillary fixation (IMF) to improve his painful TMD symptoms, skeletal jaw relationship and occlusion. After the operation, the pain was relieved and his facial profile was improved. Two years follow up, the occlusion was stable and condyle head remodeling was found due to anterior and inferior displacement of condyle head.

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This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.