A large-cohort study of 2971 cases of epulis: focusing on risk factors associated with recurrence.

Background: To analyze the clinicopathological features of different histological subtypes of epulis, and evaluate the risk factors associated with recurrence.

Materials And Methods: A retrospective study including 2971 patients was performed. The patients' sex, age, location, size, histological subtypes, recurrence information, oral hygiene habits, periodontitis symptoms and smoking history were retrieved from the patient medical records and follow-up information.