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The effect of temporomandibular joint movement on tinnitus

턱의 운동이 이명에 미치는 영향

  • Kim, Jeong-Mo (Department of Oral and Maxillofacial Surgery, Kangwon National University Hospital) ;
  • Kim, Tae Su (Department of Otolaryngology, Kangwon National University Hospital) ;
  • Nam, Eui-Cheol (Department of Otolaryngology, School of Medicine, Kangwon National University)
  • 김정모 (강원대학교병원 구강악안면외과) ;
  • 김태수 (강원대학교병원 이비인후과) ;
  • 남의철 (강원대학교 의학전문대학원 이비인후과학교실)
  • Received : 2013.05.15
  • Accepted : 2013.09.06
  • Published : 2013.12.30

Abstract

Purpose: A growing number of studies have been providing evidence for neural connections between the auditory and somatosensory systems that might be a critical part of the mechanisms underlying certain forms of tinnitus. The aim of this study was to investigate the effect of temporomandibular joint (TMJ) movements on tinnitus. Methods: One hundred sixty-three tinnitus patients participated in this study. All patients underwent a thorough audiological examination including pure-tone audiometry, tinnitus handicap inventory, and evaluation of tinnitus loudness, frequency and severity on a visual analog scale. Somatic testing consisting of nine forceful jaw muscle contractions was performed to evaluate the effect of TMJ movements on modulation of tinnitus. Results: 66.9% of patients had unilateral tinnitus. Somatic testing modulated tinnitus loudness in 125 ears (57.6 %) of 217 ears tested. An increase in tinnitus loudness was observed more often than a decrease. Loudness was most commonly increased by opening and clenching jaw. Tinnitus could be induced by opening, clenching and deviating jaw to the left. Conclusion: Our study showed evidence that TMJ movements may aggravate and even evoke tinnitus and somatic testing can be used for evaluating if stimulation of the TMJ induces or aggravates tinnitus.

Acknowledgement

Supported by : 한국연구재단

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