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KMID : 0355620070330050518
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Journal of Korean Association of Oral and Maxillofacial Surgeons
2007 Volume.33 No. 5 p.518 ~ p.523
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Changes of temporomandiular joint symptoms after orthognathic surgery in the asymmetric prognathism patients
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Kim Young-Sam
Ryu Dong-Mok
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Abstract
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Purpose: The purpose of this study is to prove that orthognatic surgery on asymmetric prognathism patients improve the temporomandibular dysfunction.
Materials and Methods:All 30 patients underwent mandibular setback with B-SSRO including 22 patients Le Fort I surgery in KyungHee medical center. Preoperative and postoperative PA cephalograms & transcranial radiographs were measured midline deviation in Mx and Mn, occlusal canting change, condyle position, the temporomandibular dysfunction were checked before surgery, within 1 month after surgery, 3~6 months, 12-24 months after surgery respectively.
Results: The temporomandibular dysfunction were relieved after surgery in 17 patients of 25 patients.
Conclusions: Orthognatic surgery may benefit the temporomandibular joint dysfunction in facial asymmetry patients by obtaining a postoperative stable occlusion and better physiologic neuromuscular function. Specially impovement of occlusal canting may reduce condyle displacement of midline deviation side and the temporomandibular joint dysfunction
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KEYWORD
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Facial asymmetry, Temporomandibular joint dysfunction
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