Epidemiological studies are essential, since through them it is possible to formulate a clinical profile, to determine the prevalence and incidence of lesions, as well as characterizing particularities specific to the environment where such tasks are performed. Objective: To perform an epidemiological survey of the main oral lesions diagnosed at the Stomatology Outpatient Clinic of the Instituto de Saúde de Nova Friburgo ISNF/UFF, drawing a demographic and clinical profile. Material and methods: A retrospective and observational study, conducted with data collection in the medical records of patients treated at the stomatology service in 2018. The information collected were gender, skin color, age, locality, occupation, income, schooling, and oral injury. Results: Data were collected from 150 patients, 93 (62%) women, 79 (53%) white, aged between 2 and 94 years, mean age of 53 years, 124 (83%) from the downtown of Nova Friburgo, 32 (21%) retired, 30 (22%) received a minimum wage and 42 (28%) incomplete middle school. Regarding oral lesions, 38 (25%) patients had actinic cheilitis, 18 (12%) prosthetic stomatitis and 5 (3%) oral cancer. Conclusion: Middle-aged women sought the outpatient clinic more frequently, and some lesions, if diagnosed early, especially actinic cheilitis, may prevent oral cancer.