title: Reported bruxism and restless legs syndrome in media personnel with or without irregular shift work.
abstract: 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 8-h daytime work. The questionnaire covered demographic items, employment details, general health experience, physical status, psychosocial status, stress, work satisfaction and performance, tobacco use, bruxism, and restless legs symptoms (RLS). The aim was to investigate among a multiprofessional media personnel the associations between reported bruxism and RLS, while simultaneously controlling the effects of gender, age, tobacco use, shift work, and dissatisfaction with current workshift schedule. The overall response rate was 58.3% (53.7% men). 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). In the bivariate analyses, RLS was more prevalent in workers at either end of the studied age range (p < 0.05). Self-reported frequent bruxism was significantly associated with younger age (p < 0.05). Females reported RLS (11.4%) slightly more often than males (7.7%) (NS). In logistic regression, frequent bruxism (p < 0.05) and older age (p < 0.05) were significantly positively associated with RLS. Dissatisfaction with one's current workshift schedule (p < 0.05) and RLS (p < 0.05) were significantly positively associated with frequent bruxism, while age (p < 0.05) was significantly negatively associated. In conclusion, perceived bruxism may be a sign of a stressful situation or dissatisfaction, while RLS as a more stable trait may in itself negatively affect sleep quality and further enhance the problem.
authors.affiliation: Institute of Dentistry, University of Helsinki, Helsinki, Finland. kristiina.ahlberg@hel.fi
authors.forename: Kristiina
authors.initials: K
authors.lastname: Ahlberg
authors.forename: Jari
authors.initials: J
authors.lastname: Ahlberg
authors.forename: Mauno
authors.initials: M
authors.lastname: Könönen
authors.forename: Markku
authors.initials: M
authors.lastname: Partinen
authors.forename: Christer
authors.initials: C
authors.lastname: Hublin
authors.forename: Aslak
authors.initials: A
authors.lastname: Savolainen
mesh_terms: D000328:Adult; D000367:Age Factors; D002012:Bruxism / Q000150:complications*; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008402:Mass Media; D008875:Middle Aged; D015999:Multivariate Analysis; D012148:Restless Legs Syndrome / Q000150:complications*; D012737:Sex Factors; D020178:Sleep Disorders, Circadian Rhythm / Q000209:etiology; D012907:Smoking; D018709:Statistics, Nonparametric; D013315:Stress, Psychological / Q000150:complications; D011795:Surveys and Questionnaires; D014940:Work Schedule Tolerance