Abstract

Background: Oral recurrent aphthous stomatitis (RAS) is the most common ulcer that clinician should be managed. It entails approximately 10-20 of people regarding the geographic and genetic pattern of society. Some literatures reported RAS episodes in Stressful events. Patients experience repeating cycle of aphthous, pain, and recurrence. Stress and inheritance as a crucial factor on RAS incidence was studied. This study aimed to assess the effect of stress on incidence of oral aphthous ulcer between girl students. Materials and Methods: In this cross-sectional descriptive analytic study, 248 female students from Yazd high schools were evaluated, before and after a period of stress. Informed consent was taken before oral examination. Results: About 248 students were partaken, only 62 persons had RAS which 32 had positive parental involvement. Correlation between familial history and experience of RAS was significant. (P < 0.001). According to the data, stress had considerable effect on RAS incidence with 67.7. Aphthous incidence was significantly different (P < 0.001). Conclusion: RAS prevalence was about 25 in the society and considerable impact of stressful events on incidence ratio was released.