Objectives: To assess the incidence of OSMF and its etiology in patients attending OPD at Dental Department, Darbhanga Medical College and Hospital Laheriasarie, Darbhanga. Material and Methods: The diagnosis of OSMF was based on clinical examination and evaluation of patients signs and symptoms who reported to the Dental Department at the college hospital during the period of February 2017– January 2018. Results: The total number of patients affected by OSMF in this time duration was 1123. Out of these, 1087 (96.82%)were male, while 36 were female (3.18%). Therefore, male: female (M:F) ratio was 30:1. The age group most affected was 21-30 years consisting 40.80% and the most common etiology was gutkha chewing. Conclusion: This study reveals that the incidence rate of OSMF in patients visiting Dental Department, Darbhanga Medical College and Hospital Laheriasarie, Darbhanga was 4.1%.Males were more affected than females. It was seen that the major etiological factors in the development of OSMF was areca nut and gutkha chewing habit in patients.
Keywords: Gutkha, habit, oral submucous fibrosis.