Condylar and Occlusal Changes after High Condylectomy and Orthodontic Treatment for Condylar Hyperplasia

Condylar hyperplasia（CH） of human temporomandibular joint（TMJ） often occurs unilaterally, and causes occlusal disturbance and facial asymmetry. The purpose of this study was to compare the effects of high condylectomy with and without postsurgical orthodontic treatment. Forty patients were diagnosed...

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Bibliographic Details
Published in:Journal of Huazhong University of Science and Technology. Medical sciences 2015-04, Vol.35 (2), p.265-270
Main Authors: El.mozen, Loaye A., Meng, Qing-gong, Li, Ying-jie, Long, Xing, Chen, Guo-xin
Format: Article
Language:English
Subjects:
Cone-Beam Computed Tomography
Female
Humans
Male
Mandibular Condyle - diagnostic imaging
Mandibular Condyle - pathology
Mandibular Condyle - surgery
Medicine
Medicine & Public Health
上颌骨
不对称
咬合
正畸
治疗
生后
面部
颞下颌关节
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Summary:Condylar hyperplasia（CH） of human temporomandibular joint（TMJ） often occurs unilaterally, and causes occlusal disturbance and facial asymmetry. The purpose of this study was to compare the effects of high condylectomy with and without postsurgical orthodontic treatment. Forty patients were diagnosed as having active CH and treated with high condylectomy. Patients in group A（n=24） took the postsurgical orthodontic therapy immediately after surgery, and those in group B（n=16） did not take orthodontic therapy. For both groups, the mandibular ramus height on the affected side was decreased significantly after surgery. Orthodontic treatment promoted maxillary alveolar remodeling significantly by depressing alveolar bone of the affected side and increasing alveolar bone of the nonaffected side. Better improvement for facial midline deviations was observed in group A than in group B. In both groups, the condylar remodeling was observed and manifested by the smoothening of condylar surface and returning of condyle to normal position in glenoid fossa. It was concluded that high condylectomy in the treatment of active CH of TMJ improved the functional occlusion and facial aesthetic. Postsurgical orthodontic therapy could more effectively enhance maxillary alveolar and condylar remodeling, and more rapidly and meticulously establish the stable occlusal and normal position of condyle than the spontaneous remodeling.
ISSN:1672-0733
1993-1352
DOI:10.1007/s11596-015-1422-5