アブストラクト(39巻2号:The Bulletin of Kanagawa Dental College)

The Bulletin of Kanagawa Dental College

English

Title : Effect of orthodontic treatment for malocclusion with TMD on the functional status of brain activities evaluated by fMRI
Subtitle : Selective Proceedings of 45th General Meeting of Kanagawa Odontological Society, 2010
Authors : Juri Saruta*1, Takero Otsuka*1, Yumie Ono*2, Kenichi Sasaguri*1, Sadao Sato*1
Authors(kana) :
Organization : *1Department of Craniofacial Growth and Development, Division of Orthodontics, Kanagawa Dental College, *2Department of Physiology and Neuroscience, Kanagawa Dental College
Journal : The Bulletin of Kanagawa Dental College
Volume : 39
Number : 2
Page : 129-131
Year/Month : 2011 / 9
Article : Report
Publisher : Kanagawa Odontological Society
Abstract : [ABSTRACT] The masticatory organ has close connection with the brain and plays an important role in maintaining homeostasis of the body and brain function. In this report, we used fMRI to evaluate the effect of malocclusion therapy on the brain activities of a patient with malocclusion. A 29-year-old female patient had difficulty in opening her mouth with occasional pain in the left TMJ and a maximum opening of only 29 mm. The case was diagnosed as skeletal Class II with dental Class I malocclusion accompanied by TMD. The treatment objectives included repositioning the displaced mandible and establishing occlusal support to eliminate compression of the condyles. Active treatment consisted of application of the MEAW mechanics after third molar extraction for 14 months. Treatment results were satisfactory in terms of the occlusion and function of TMJ as well as esthetics. fMRI analysis of brain activity before and after orthodontic treatment indicated that clenching at the habitual ICP before treatment resulted in increased BOLD signals in the hypothalamus; however, this activity slowed down after treatment. In conclusion, orthodontic treatment of malocclusion with TMD can solve TMD problems, and relieve unpleasant symptoms by recovering brain function.
Practice : Dentistry
Keywords : Condylograph, fMRI, MEAW, Splint, TMD