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Benign cementoblastoma in a primary lower molar, a rarity

¹ Department of Oral Radiology, Institute of Dentistry, University of Helsinki, Helsinki, Finland; ² Division of Pathology, HUSLAB, University Central Hospital Central Laboratory, Helsinki, Finland; ³ Health Centre, City of Helsinki, Helsinki, Finland

*Correspondence to: Kim Lemberg, Institute of Dentistry and Oral Radiology, University of Helsinki, P.O. Box 41, FIN-00014 Helsinki, Finland; Email: kim.lemberg{at}helsinki.fi

Received 12 April 2006; revised 11 September 2006; accepted 2 October 2006

An asymptomatic radiopacity surrounded by a radiolucent line was observed from a panoramic radiograph of an 11-year-old girl. The lesion was associated with the mesial root of the lower right second primary molar. The radiographic appearance of the lesion suggested a benign cementoblastoma. Histological diagnosis after surgical excision of the tumour and extraction of the tooth confirmed the radiographic diagnosis. Benign cementoblastomas associated with primary teeth are extremely rare lesions. To our knowledge, only eight cases have been reported in the literature.

Keywords: cementoblastoma; primary tooth; dental radiography