Background & objectives: Sound and lighting are the deleterious effects of the physical environment as exposure to physical stressors act. Occupational stress in certain areas of life occurs and factors contribute to its creation. The purpose of this study was to investigate the relationship between these two factors, physical and psychological stress in dentistry in the city of Shiraz.

Methods: This descriptive study was conducted among 150 dentists in Shiraz; Samples were selected randomly. Data collection included job stress questionnaire, the scale and luxury m. Statistical analysis by Pearson correlation test, T-test of independent, Kruscal-Wallis Test and Mann-Whitney Test was performed using SPSS 16 software.

Results: The volume and intensity of lighting in public centers are more than private sectors. The stress in public sectors was more than private centers and the difference was statistically significant ((p=0.02 Sound of the workplace and job stress were associated with each other that the relationship is statistically significant (p=0.007 the relationship between age and work experience job stress was reversely related and statistically significant (p=2.02, 0.01). The lighting environment with job stress were not correlated significantly (p=0.02).

Conclusion: Stress in dental practice decreases quality and quantity of health care services. Therefore, identification of stress in dental and physical agents in the workplace, such as sound and lighting led activities to reduce the effects of stress and enhance the quality of services.