Tehran University of Medical Sciences International Journal of Occupational Hygiene 2008-5109 17 1 2025 03 03 55 60 Fatemeh Khayati School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran Mahnaz Saremi SBMU Marjan Firoozeh Royal Australian College of General Practitioners Amir Kavousi School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran 2024 09 12 2024 09 24 Background: Musculoskeletal disorders of the neck and shoulders are the most commonly reported complaints in sedentary occupations such as dentistry. These disorders not only cause pain but can also impair postural control mechanisms. The aim of this study was to investigate the relationship between postural stability disorders and forward head posture (FHP) in dentists. Materials & Methods: In this cross-sectional study, 70 dentists from two dental centers in Tehran were investigated. Individual and job characteristics were collected via questionnaire. The head position was examined using clinical testing for forward head posture. The Romberg equilibrium test and its three modified versions were used to evaluate static stability, and the stepping test was applied to evaluate dynamic stability. Pearson’s correlation coefficient and the independent t-test were used to examine the relationship between variables and to investigate the difference in stability variables between the FHP and healthy groups. Results: Based on the results, 57.1% of the studied dentists were diagnosed with forward head posture. According to the results of the independent t-test, there were significant differences in the average holding time in the static stability tests and the deviation degrees from the normal range in the dynamic equilibrium test between the FHP and healthy groups (p= 0.013). Conclusion: FHP could negatively affect the postural equilibrium of dentists. Suitable interventions such as ergonomic redesign of workstations and/or corrective exercises are strongly recommended. https://ijoh.tums.ac.ir/index.php/ijoh/article/view/639 https://ijoh.tums.ac.ir/index.php/ijoh/article/download/639/821