Odontogenic fibroma WHO-type simulating periodontal disease: Report of a case.

Central odontogenic fibroma World Health Organization (WHO)-type (OFWT) is a rare lesion that has differential diagnosis with other radiolucent periapical lesions. It has a slow growth and is usually an asymptomatic lesion found in routine examinations. We report a case of a central OFWT occurring in the maxilla, for which the first symptom was teeth mobility, simulating a periodontal condition. A 54-year-old woman, with superior premolar mobility, was referred to our clinic. An oral examination showed teeth vitality and advanced periodontal disease. Radiography showed a unilocular radiolucent area between the left superior lateral incisor and first left molar, with bone reabsorption. The granulomatous tissue was removed and microscopic examination revealed cellular connective tissue with multiple islands of odontogenic epithelium, covered by stratified squamous epithelium, confirming the OFWT diagnosis. The central OFWT is a non-aggressive lesion, with rare recidivism. Biopsy is an important procedure for correct diagnosis and treatment, as some radiolucent lesions can lead to misdiagnosis.