TODENTJ-25-03-2019_TODENTJ-6-240 1553505426 Bentham Open doi@benthamopen.net Bentham Open The Open Dentistry Journal TODENTJ 1874-2106 12 28 2012 6 1 Akira Nishiyama Koji Kino Masashi Sugisaki Kaori Tsukagoshi Background: The symptoms of temporomandibular disorders (TMD) are directly influenced by numerous factors, and it is thought that additional factors exert indirect influences. However, the relationships between TMD-related symptoms (TRS) and these contributing factors are largely unknown. Thus, the goal of the present study was to investigate influences on TRS in a working population by determining the prevalence of TRS, analyzing contributing factors, and determining their relative influences on TRS. Materials and Methods: The study subjects were 2203 adults who worked for a single company. Subjects completed a questionnaire assessing TRS, psychosocial factors (stress, anxiety, depressed mood, and chronic fatigue), tooth-contacting habit, and sleep bruxism-related morning symptoms, using a 5-point numeric rating scale. Our analysis proceeded in 2 phases. First, all variables of the descriptor were divided into parts by using an exploratory factor analysis. Second, this factorial structure was verified by using a confirmatory factor analysis with structural equation modeling. Results: Of 2203 employees, 362 reported experiencing TRS (16.4%). Structural equation modeling generated a final model with a goodness of fit index of 0.991, an adjusted goodness of fit index of 0.984, and a root mean square error of approximately 0.021. These indices indicate a strong structural model. The standardized path coefficients for “habitual behavioral factors and TRS,” “psychosocial factors and habitual behavioral factors,” “psychosocial factors and TRS,” and “gender and habitual behavior factors” were 0.48, 0.38, 0.14, and 0.18, respectively. Conclusions: Habitual behavioral factors exert a stronger effect on TRS than do psychosocial factors. 12 28 2012 240 247 TODENTJ-6-240 1 10.2174/crossmark_policy opendentistryjournal.com benthamopen.com true Peer Reviewed Single blind Checked with iThenticate 2012-8-27 2012-10-9 2012-10-23 2012-12-28 http://creativecommons.org/licenses/by-nc/3.0/ 10.2174/1874210601206010240 1553505426 https://opendentistryjournal.com/VOLUME/6/PAGE/240/ https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-240/TODENTJ-6-240.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-240/TODENTJ-6-240.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-240/TODENTJ-6-240.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-240/TODENTJ-6-240.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-240/TODENTJ-6-240.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-240/TODENTJ-6-240.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-240/TODENTJ-6-240.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-240/TODENTJ-6-240.xml Okeson JP. 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