[EO-4] Relationship between TMD-related symptoms and personal computer use, psychosocial factors, and behavioral factors in Japanese working population.
[Abstract]
[Objective][newline]
To investigate the effect personal computers (PC) which is considered as a type of visual display terminal (VDT), on temporomandibular disorders (TMDs).
[Method][newline]
A questionnaire-based survey was conducted with 5619 employees of four companies. The administered questionnaire was used to screen the following factors including TMD-related symptoms (TRS), habitual behaviors, psychosocial status, awake and sleep bruxism in addition to the time spent using the PC at work. After excluding the data missing values, the remaining 4776 subjects were extracted and included in the analysis. Structural Equation Modeling (SEM) was used to test the hypothesized models correlating the TMD-related symptoms (TRS) to the other factors of the questionnaire, and to examine the effect of the time spent using the PC on males and females with our sample. P value of <0.05 was considered a significant difference.
[Results and Discussion] [newline]
SEM revealed that sleep bruxism and other parafunctional habits are directly correlated with TMD-related symptoms and have a direct effect on it, while psychosocial factors acted as perpetuating factors. The duration of the PC usage has greater influence on females than males within our studied sample. Psychosocial factors may augment the presence the of TMD-related symptoms, while factors as sleep or awake bruxism and other parafunctional behaviors and habits may have a direct influence on TMD-related symptoms. The PC use at work may escalate the effect of the psychosocial factors and other parafunctional habits with greater tendency in the females.(1-2)
[References][newline]
1.Nishiyama A, Kino K, Sugisaki M, Tsukagoshi K. Influence of psychosocial factors and habitual behavior in temporomandibular disorder-related symptoms in a working population in Japan. Open Dent J. 2012;6
2.Rollman GB, Gillespie JM. The role of psychosocial factors in temporomandibular disorders. Curr Rev Pain. 2000;4
[Objective][newline]
To investigate the effect personal computers (PC) which is considered as a type of visual display terminal (VDT), on temporomandibular disorders (TMDs).
[Method][newline]
A questionnaire-based survey was conducted with 5619 employees of four companies. The administered questionnaire was used to screen the following factors including TMD-related symptoms (TRS), habitual behaviors, psychosocial status, awake and sleep bruxism in addition to the time spent using the PC at work. After excluding the data missing values, the remaining 4776 subjects were extracted and included in the analysis. Structural Equation Modeling (SEM) was used to test the hypothesized models correlating the TMD-related symptoms (TRS) to the other factors of the questionnaire, and to examine the effect of the time spent using the PC on males and females with our sample. P value of <0.05 was considered a significant difference.
[Results and Discussion] [newline]
SEM revealed that sleep bruxism and other parafunctional habits are directly correlated with TMD-related symptoms and have a direct effect on it, while psychosocial factors acted as perpetuating factors. The duration of the PC usage has greater influence on females than males within our studied sample. Psychosocial factors may augment the presence the of TMD-related symptoms, while factors as sleep or awake bruxism and other parafunctional behaviors and habits may have a direct influence on TMD-related symptoms. The PC use at work may escalate the effect of the psychosocial factors and other parafunctional habits with greater tendency in the females.(1-2)
[References][newline]
1.Nishiyama A, Kino K, Sugisaki M, Tsukagoshi K. Influence of psychosocial factors and habitual behavior in temporomandibular disorder-related symptoms in a working population in Japan. Open Dent J. 2012;6
2.Rollman GB, Gillespie JM. The role of psychosocial factors in temporomandibular disorders. Curr Rev Pain. 2000;4