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Weak association between sleep bruxism and obstructive sleep apnea. A sleep laboratory study

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Title: Weak association between sleep bruxism and obstructive sleep apnea. A sleep laboratory study
Authors: Saito, Miku Browse this author
Yamaguchi, Taihiko Browse this author →KAKEN DB
Mikami, Saki Browse this author
Watanabe, Kazuhiko Browse this author
Gotouda, Akihito Browse this author →KAKEN DB
Okada, Kazuki Browse this author
Hishikawa, Ryuki Browse this author
Shibuya, Eiji Browse this author
Shibuya, Yoshie Browse this author
Lavigne, Gilles Browse this author
Keywords: Obstructive sleep apnea-hypopnea
Rhythmic masticatory muscle activity
Sleep bruxism
Tooth grinding
Issue Date: May-2016
Publisher: Springer
Journal Title: Sleep & breathing
Volume: 20
Issue: 2
Start Page: 703
End Page: 709
Publisher DOI: 10.1007/s11325-015-1284-x
PMID: 26564168
Abstract: No definitive associations or causal relationships have been determined between obstructive sleep apnea-hypopnea (OSAH) and sleep bruxism (SB). The purpose of this study was to investigate, in a population reporting awareness of both OSAH and SB, the associations between each specific breathing and jaw muscle event. Polysomnography and audio-video data of 59 patients reporting concomitant OSAH and SB history were analyzed. Masseteric bursts after sleep onset were scored and classified into three categories: (1) sleep rhythmic masticatory muscle activity with SB (RMMA/SB), (2) sleep oromotor activity other than RMMA/SB (Sleep-OMA), and (3) wake oromotor activity after sleep onset (Wake-OMA). Spearman's rank correlation coefficient analyses were performed. Dependent variables were the number of RMMA/SB episodes, RMMA/SB bursts, Sleep-OMA, and Wake-OMA; independent variables were apnea-hypopnea index (AHI), arousal index(AI), body mass index(BMI), gender, and age. Although all subjects had a history of both SB and OSAH, sleep laboratory results confirmed that these conditions were concomitant in only 50.8 % of subjects. Moderate correlations were found in the following combinations (p < 0.05); RMMA/SB episode with AI, RMMA/SB burst with AI and age, Sleep-OMA burst with AHI, and Wake-OMA burst with BMI. The results suggest that (1) sleep arousals in patients with concomitant SB and OSAH are not strongly associated with onset of RMMA/SB and (2) apnea-hypopnea events appear to be related to higher occurrence of other types of sleep oromotor activity, and not SB activity. SB genesis and OSAH activity during sleep are probably influenced by different mechanisms.
Rights: The final publication is available at Springer via
Type: article (author version)
Appears in Collections:歯学院・歯学研究院 (Graduate School of Dental Medicine / Faculty of Dental Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 山口 泰彦

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