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http://dx.doi.org/10.14476/jomp.2013.38.3.261

Surface Electromyographic Characteristics of a Myofascial Trigger Point of the Temporalis Muscle: A Case Report  

Im, Yeong-Gwan (Department of Oral Medicine, Chonnam National University Dental Hospital)
Baek, Hey-Sung (Department of Pediatrics, Hallym University Kangdong Sacred Heart Hospital, Hallym University College of Medicine)
Lee, Guem-Sug (Department of Dentistry, Chonnam National University Hwasun Hospital)
Kim, Byung-Gook (Department of Oral Medicine, School of Dentistry, Chonnam National University)
Publication Information
Journal of Oral Medicine and Pain / v.38, no.3, 2013 , pp. 261-266 More about this Journal
Abstract
Myofascial pain is a condition associated with regional pain and muscle tenderness characterized by the presence of myofascial trigger points. In this case report, a subject complaining of nighttime bruxism was clinically assessed, and a latent trigger point of the anterior temporalis muscle was identified with manual palpation. A surface electromyographic (SEMG) exam of the anterior temporalis muscle harboring the latent trigger point demonstrated several SEMG features, including post-contraction irritability, delayed relaxation following contraction and accelerated muscle fatigue. It was concluded that a SEMG exam may detect abnormal masticatory muscle function and, therefore, assist in the evaluation of myogenous temporomandibular disorders.
Keywords
Myofascial pain; Trigger points; Masticatory muscles; Surface electromyography;
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