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Cranio. 2018 May 9:1-6. doi: 10.1080/08869634.2018.1471113. [Epub ahead of print]

Possible sleep bruxism, circadian preference, and sleep-related characteristics and behaviors among dental students.

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1
a Department of Pediatric Dentistry and Orthodontics , Universidade Federal de Minas Gerais , Belo Horizonte , Brazil.

Abstract

OBJECTIVE:

To assess sleep bruxism prevalence and its association with circadian preference and sleep-related characteristics among dental students.

METHODS:

Dental students of the Federal University of Minas Gerais participated in this cross-sectional study. Participants answered a scale assessing individuals' circadian preference, and a questionnaire regarding sleep-related characteristics and behaviors, history of muscle ache in the temporomandibular area, and history of bruxism.

RESULTS:

One hundred fifty-two students participated in the study. Sleep bruxism was reported by 11.3%. Most students (63.2%) were classified as intermediary, 34.9% as morningness, and 1.3% as eveningness. Individuals who reported muscle ache in the temporomandibular area in the morning (PR = 3.5; 95% CI = 1.1-11.5) were more likely to be in the group with sleep bruxism.

CONCLUSION:

Muscle ache in the temporomandibular area is an important associated factor with sleep bruxism among dental students. Special attention should be paid to dental students' circadian preference.

KEYWORDS:

Bruxism; circadian clocks; circadian rhythm; dental students; sleep; sleep bruxism; sleep hygiene; temporomandibular joint

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