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Anterior open bite with temporomandibular disorders treated with intermaxillary traction using skeletal anchorage system.

Authors
 Kim Hye-Sun ; Lee Sang-Hoon ; Huh Jong-Ki ; Kim Hyung-Gon ; Youn Taegyun 
Citation
 대한구강악안면외과학회지, Vol.38(5) : 284~294, 2012 
Journal Title
 대한구강악안면외과학회지 
ISSN
 1225-1585 
Issue Date
2012
Abstract
OBJECTIVES: The anterior open bite with temporomandibular disorders (TMD) is one of the most challenging cases both orthodontically and surgically. We introduce an intermaxillary traction treatment for patients with anterior open bite and TMD using a skeletal anchorage system (SAS). MATERIALS AND METHODS: This study was comprised of 52 patients with anterior open bite and TMD. A total of four mini-screws were inserted, two screws each into the maxilla and mandible, to obtain a class II pattern of elastic application with 120-200 g force. Adjunctive muscle relaxation treatments, such as splint therapy, medication, and botulinum toxin injection were applied during or before intermaxillary traction. At least one treatment among adjunctive muscle relaxation treatment, mentioned above, was applied to 96.2% of patients. We evaluated the clinical characteristics of patients, TMD symptom changes, amount of open bite improved. The degree of open bite improvement was compared between the open bite-reduced group (21 patients) and not-reduced group (5 patients). RESULTS: TMD symptoms (muscle/joint pain, joint sound, mouth opening) remained or improved in most patients, and worsened in about 10% of patients for each items. Anterior open bite was improved by a mean of 1.75 mm (P<0.01) during treatment. The open bite-reduced group exhibited a significant open bite improvement compared to the not-reduced group (P<0.05), with 37% of open bite improvement occurring during the first 3 months of treatment. CONCLUSION: The intermaxillary traction technique using SAS is a valid modality for correction of anterior open bite and improvement of TMD symptoms.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/92228
Appears in Collections:
1. 연구논문 > 2. College of Dentistry > Dept. of Oral and Maxillofacial Surgery
Yonsei Authors
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