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The Bruxoff Device as a Screening Method for Sleep Bruxism in Dental Practice
Open AccessArticle

Correlation between Sleep Bruxism, Stress, and Depression—A Polysomnographic Study

Department of Experimental Dentistry, Wroclaw Medical University, 50-425 Wroclaw, Poland
Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 50-556 Wroclaw, Poland
Author to whom correspondence should be addressed.
J. Clin. Med. 2019, 8(9), 1344;
Received: 30 July 2019 / Revised: 22 August 2019 / Accepted: 26 August 2019 / Published: 29 August 2019
(This article belongs to the Special Issue Sleep Bruxism—The Controversial Sleep Movement Activity)
Background and objectives: Sleep bruxism is a common phenomenon that can affect approximately 13% of adult population. It is estimated that bruxism can be caused by three types of factors: biological, psychological, and exogenous. There are many scientific reports about the coexistence of bruxism, stress, and psychoemotional disorders. The aim of this study is to evaluate the possible correlation between occurrence of sleep bruxism and perceived stress and depressive symptoms. Material and methods: The material of this study consisted of 77 patients of Clinic of Prosthetic Dentistry operating at the Department of Prosthetic Dentistry, Wroclaw Medical University, Poland in which after using guidelines of the American Academy of Sleep Medicine probable sleep bruxism was fund. Patients then underwent video-polysomnography. Exposure to perceived stress was evaluated with Perceived Stress Scale-10 (PSS-10). Occurrence of depressive symptoms was evaluated with Beck’s Depression Inventory (BDI). Results: The analysis showed lack of statistically significant correlation between Bruxism Episodes Index (BEI) and Perceived Stress Scale–10 and Beck’s Depression Inventory scores (p = 0.64, p = 0.65; respectively), also when comparing study group (bruxers) and control group (non-bruxers) (p = 0.88, p = 0.77; respectively). Conclusion: Intensity of sleep bruxism was not statistically significantly correlated with self-reported perceived stress and depression. This issue requires further research. View Full-Text
Keywords: bruxism; sleep bruxism; masticatory muscle activity; stress; depression; polysomnography bruxism; sleep bruxism; masticatory muscle activity; stress; depression; polysomnography
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Smardz, J.; Martynowicz, H.; Wojakowska, A.; Michalek-Zrabkowska, M.; Mazur, G.; Wieckiewicz, M. Correlation between Sleep Bruxism, Stress, and Depression—A Polysomnographic Study. J. Clin. Med. 2019, 8, 1344.

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