The Prevalence and Associated Factors of Musculoskeletal Disorders among Specialist Dentists using RULA method in Departments and Specialized Clinics of Dental School of Tabriz University of Medical Sciences in 2019

Abstract

Background and Aim: Musculoskeletal disorders are one of the most common occupational diseases worldwide and dentists are more prone to musculoskeletal problems compared to other medical professionals due to their dynamic and static activities. The prevalence of musculoskeletal problems in specialized dentists was evaluated using the RULA method. Methods: In this descriptive-analytical study all dentists practicing in specialized clinics affiliated to the Dental School of Tabriz University of Medical Sciences in 2019 were studied. The Nordic Musculoskeletal Disorders Symptom Inventory and the Personal and Occupational Dysfunctional Questionnaire were completed by 66 specialist dentists. Also, the postures of dentists during work were recorded and evaluated by the researcher using the RULA tool. SPSS software version 21 was used for data analysis using independent t-test, and P <0.05 was considered significant. Results: The present study showed that musculoskeletal disorders in the neck were the most prevalent (69.7%) followed by wrist (51.5%), shoulder (50%), back (33.3%), Waist (33.3%), knee (16.7%), hip (13.6%), ankle (13.6%) and elbow (10.6%) were the most common problems among dental practitioners, respectively. Frequency of back problems was significantly related to right hand (P <0.05) and ankle injury was significantly less in those who exercised (P <0.05), shoulder and knee injuries increased with age rise and pelvic area damages increased with BMI rise. Also, most dental practitioners’ postures were at corrective levels 3 and 4 of the RULA tool while the Surgery and periodontist specialists were at level 4. Conclusion: According to the results of this study, educational interventions are necessary to prevent injuries in dental practitioners and specialists.