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Development of a speech-discriminating electromyogram system for routine ambulatory recordings for the low-level masseter muscle activity

Summary Previous work suggests a relationship between sustained low‐level tooth clenching and the aetiology of myogenous temporomandibular disorder (TMD) pain. This study aimed to establish a reliable system with which to evaluate low‐level electromyographic (EMG) activity related to low‐level tooth...

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Bibliographic Details
Published in:Journal of oral rehabilitation 2014-04, Vol.41 (4), p.266-274
Main Authors: Kumazaki, Y., Naito, M., Kawakami, S., Hirata, A., Oki, K., Minagi, S.
Format: Article
Language:English
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Summary:Summary Previous work suggests a relationship between sustained low‐level tooth clenching and the aetiology of myogenous temporomandibular disorder (TMD) pain. This study aimed to establish a reliable system with which to evaluate low‐level electromyographic (EMG) activity related to low‐level tooth clenching while discriminating speech activity, which is one of the most common facial muscle activities to be discriminated from low‐level clenching. This device should facilitate the clinical evaluation of awake muscle activity in TMD patients. Eight female and eight male subjects (38·9 ± 11·3 years) participated in the study to evaluate the validity of estimation of speech duration. Actual speech duration was defined by one examiner by pointing out the timing of beginning and end point of each speech on wave‐editing software. Speech duration, as detected by a voice sensor system, which was activated by a voice loudness of 54·71 ± 5·00 dB, was significantly correlated with the above actual speech duration (P 
ISSN:0305-182X
1365-2842
DOI:10.1111/joor.12138