Abstract: Objective: To analyze clinical features of epulis and provide a reference for delving into the biological behavior and prevention of relapse of epulis. Methods: Patients diagnosed as epulis through outpatient and postoperative pathology at the Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University from 2018 to 2019 were retrospectively analyzed. Results: A total of 234 cases of epulides were included. The peak incidence of epulis fell in 21 to 30 years old, and the total ratio of males to females was about 1∶2.2. Female was more frequent in the group from 31 to 70 years (P<0.05), yet there was no statistically difference in the proportion of male and female under the age of 30 (P>0.05). Histopathological examination revealed fibrous epulis (121 cases, 51.71%), granuloma epulis (76 cases, 32.48%), vascular epulis (36 cases, 15.38%), and giant cell epulis (1 case, 0.43%). There was no significant difference in the distribution of the upper and lower jaws of epulis (P>0.05), and the anterior teeth area was the common location (P<0.001). In addition, epulis were mostly located on the buccal side (66.67%) and least in the edentulous area (1.28%). The size of epulis varied from 0.3 cm to 2.2 cm in diameter, most of which were distributed among the range of 0.6 cm to 1.5 cm (78.2%). Two cases had relapsed after periodontal system treatment in the short term, and the recurrence rate was 0.85%. Conclusion: Epulides are more prevalent in females and young patients(21 to 30 years old). The majority of epulides were located in the anterior region and on the buccal side. Perfect inflammation control and thorough surgical resection can effectively control the recurrence of epulis.

Key words: epulis, clinical features, relapse prevention