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Exudative Benign Cementoblastoma with Radiographic Rarities- A Case Report with Review of Literature

Cementoblastoma is a rare benign odontogenic neoplasm of mesenchymal origin. The benign cementoblastoma was previously classified as one of the cementoma neoplasias by the World Health Organization’s classification of odontogenic tumours. The benign cementoblastoma in 2005 has been added to the list of odontogenic tumours that involve “mesenchyme and/or odontogenic ectomesenchyme, with or without odontogenic epithelium”. It accounts for around 0.69-8% of all odontogenic tumours. The lesion usually is asymptomatic and slow growing causing cortical plate expansion of both buccal and lingual plates. Cementoblastoma has male predilection, commonly seen involving mandibular first molar diagnosed in early age. There are very few incidents of an infected cementoblastoma in the literature. Radiological examinations can reveal a blend of radiolucent and radiopaque mass presenting a wheel spoke pattern. The histopathological results for both cementoblastoma and osteoblastoma are comparable. The relationship of the lesion with the tooth is the distinguishing element. Hereby, authors present a case of infected cementoblastoma in a 51-year-old female patient involving impacted mandibular second molar, clinically aggressive with unique radiologic features. Cementoblastoma is usually an incidental finding while the present case was associated with an impacted tooth and was symptomatic with infection. The uniqueness of this case was the complete involvement of the root structure and the cyst like expansion of the lesion instead of the usual thin radiolucent rim. Also, the lesion was infected with no dental caries associated with the tooth.