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  • Title: The evaluation of jaw function subsequent to bilateral sagittal split osteotomy.
    Author: Yang XW, Dong YJ, Long X, Zhang GZ, Kao CT.
    Journal: Oral Surg Oral Med Oral Pathol Oral Radiol Endod; 2005 Jul; 100(1):10-6. PubMed ID: 15953911.
    Abstract:
    OBJECTIVE: The objective of the present study was to evaluate the jaw function and anatomical changes subsequent to orthodontic treatment combined with mandibular advancement or set-back surgery. STUDY DESIGN: The sample consisted of 67 combined skeletal and dental malocclusion patients, who had received orthodontic and surgical treatment previously. Three and 6 months following jaw surgery, the following jaw functions were evaluated: the level of occlusal force developed, the efficiency of masticatory function, the size in the temporomandibular joint (TMJ), the relationship between occlusal force and maxillo-mandibular skeletal change, and the range of mandibular movement. RESULTS: The results revealed that after surgery the occlusal force, masticatory function, TMJ positioning, and mandibular movement distance were all different from presurgery values. The surgical set-back group jaw function recovery proved to be more rapid than that for the mandibular-advancement group. CONCLUSION: Surgical mandibular advancement and set-back by sagittal-split osteotomy influence subsequent mandibular function.
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