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. 2008 Feb 28:4:4.
doi: 10.1186/1746-160X-4-4.

Associations of reported bruxism with insomnia and insufficient sleep symptoms among media personnel with or without irregular shift work

Kristiina Ahlberg  1 , Antti Jahkola, Aslak Savolainen, Mauno Könönen, Markku Partinen, Christer Hublin, Juha Sinisalo, Harri Lindholm, Seppo Sarna, Jari Ahlberg
Affiliations

Associations of reported bruxism with insomnia and insufficient sleep symptoms among media personnel with or without irregular shift work

Kristiina Ahlberg et al. Head Face Med. .

Abstract

Background: The aims were to investigate the prevalence of perceived sleep quality and insufficient sleep complaints, and to analyze whether self-reported bruxism was associated with perceptions of sleep, and awake consequences of disturbed sleep, while controlling confounding factors relative to poor sleep.

Methods: A standardized questionnaire was mailed to all employees of the Finnish Broadcasting Company with irregular shift work (n = 750) and to an equal number of randomly selected controls in the same company with regular eight-hour daytime work.

Results: The response rate in the irregular shift work group was 82.3% (56.6% men) and in the regular daytime work group 34.3% (46.7% men). Self-reported bruxism occurred frequently (often or continually) in 10.6% of all subjects. Altogether 16.8% reported difficulties initiating sleep (DIS), 43.6% disrupted sleep (DS), and 10.3% early morning awakenings (EMA). The corresponding figures for non-restorative sleep (NRS), tiredness, and sleep deprivation (SLD) were 36.2%, 26.1%, and 23.7%, respectively. According to logistic regression, female gender was a significant independent factor for all insomnia symptoms, and older age for DS and EMA. Frequent bruxism was significantly associated with DIS (p = 0.019) and DS (p = 0.021). Dissatisfaction with current work shift schedule and frequent bruxism were both significant independent factors for all variables describing insufficient sleep consequences.

Conclusion: Self-reported bruxism may indicate sleep problems and their adherent awake consequences in non-patient populations.

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