Evaluation of prevalence of Aphthous lesions and role of related factors in girls of high schools of district 10, 9, 6, 3, 2 in Tehran city

Aphtous lesions are painful ulcers on the unattached mucous membrane and causes some disorders such as limitation in eating ¸speaking and swelling. The aim of this study was evaluation of the prevalence of Aphtous lesions and relating factors on high schools girls of districts 2,3,6,9,10 in Tehran. this study was done as sectional- descriptive one. A total of 412 female students of high school districts 2,3,6,9,10 of Tehran have been studied as samples. A questionnaire was completed regarding the spread of RAS (Recurrent Aphtous Stomatitis) and, place of calamity, period of recurrence and relating factors reported by students. Data was analyzed by ordinal regression, mann whitney, correlation coefficient Spearman in spss. Prevalence of RAS was 51/21%. Recurrent period was between 3-6 months 32.3%) in 145 Patients and lesser than 3 months in others. The lesions were most spread in cheek mucous, vestibule buccal and labial (32/7%).The results of questionnaire showed that some food stuffs increased the calamity such as walnut¸ melon¸ kiwi, but this finding was not statistically significant. There was significant correlation between psychological disorders (stress and depression & anxiety) and RAS (p<0.0001), and between iron deficiency anemia and RAS (p=0.0001). Based on the results of this study, prevalence of aphthous ulcers is 51/21 and some food stuffs intensify these lesions and depression effects on recurrence of them.