Iranian Dental Association Journal of Iranian Dental Association 3060-8201 25 2 2013 04 01 Evaluation the Effect of Swimming Time on Dental Erosion among Swimmers 76 79 EN Masomeh Mehdipour Ali Taghavi Zenooz Narges Gholizadeh Aila Bahramian Nastaran Sartip Pour Journal Article 2013 03 03 2013 05 22 Background and Aim: Erosion is a multi-factorial process that occurs during life and it happens by many external or internal factors . The current study aimed to evaluate the relation of swimming time and dental erosion among swimmers . Materials and Methods : In this descriptive-analytical study, 84women individuals were selected. The case group included 42 swimmers who swam more than 6 hours per week and the control group comprised of 42 swimmers who swam less than 6 hours. The information regarding dental erosions and other data was collected by questionnaires. The dental erosion evaluation was performed using Smith-Knight index. X2 was utilized for statistical comparisons. The P-value of less than 0.05 was considered statistically significant . Results: Findings revealed that the dental erosion proportions was similar among two groups and there was no relation between swimming time and dental erosion among swimmers (p-value= 0/6 , X2 = 0.26) . Conclusion: There was no relation between swimming time and dental erosion among swimmers . Therefore, the role of swimming time on dental erosion was not proved .