Background: Localized gingival overgrowths are commonly encountered in the oral cavity and are classified as reactive rather than neoplastic. One specific type is known as peripheral odontogenic ossifying fibroma, seen primarily in the interdental papilla region, originate from underneath the periodontium and is associated with factors such as trauma, subgingival plaque, calculus and dental appliances. Aim: To obtain a definitive diagnosis of gingival overgrowth present in a patient from 6 months. Case study: A 25-year-old female presented with chief complaint of a gingival swelling in the maxillary right interdental region between canine and premolar. Swelling was non-tender and soft to firm in consistency. Radiographic findings revealed bone loss seen at the coronal third of the root without any other abnormalities. An excisional biopsy was performed under local anaesthesia and the tissue was submitted for histopathological investigation. The histopathological examination showed hyperplastic stratified squamous epithelium overlying inflamed connective tissue. Chronic inflammatory infiltrate predominantly showed lymphocytes. Connective tissue showed dystrophic calcification either lamella or woven bone.