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LETTER TO EDITOR Table of Contents   
Year : 2002  |  Volume : 12  |  Issue : 1  |  Page : 136-137

22/8 FM, Medical Campus, Rohtak-124001, Haryana, India

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How to cite this article:
Magu S. Cementoblastoma. Indian J Radiol Imaging 2002;12:136-7

How to cite this URL:
Magu S. Cementoblastoma. Indian J Radiol Imaging [serial online] 2002 [cited 2020 Jul 11];12:136-7. Available from:

An eighteen year male presented with pain in the lower jaw. An orthopantogram done [Figure - 1] showed a dense mass with a radiolucent periphery, in relation to lower molar. A clinical diagnosis of cementoma was forwarded. The mass was enucleated and on histopathology was found to be a cementoblastoma.

The term cementoma has been employed to describe what now appears to be four unrelated lesions: Periapical Cemental (fibrous) dysplasia, benign (true) cementoblastoma, cementifying fibroma and familial multiple (gigantiform) cementoma [1].

The benign (true) cementoblastoma is a rare lesion probably first described by Norberg [2]. The lesion occurs most frequently in persons under 25 years of age and predominantly among men [3]. The lesion is solitary. It is most often associated with permanent tooth, but primary teeth may be the site of a benign cementoblastoma [3]. It grows slowly, tends to expand the bony plates, is attached to the tooth root and may involve the root canal. A lower premolar or molar is most frequently involved[1]. This lesion is easily enucleated as it is benign and surrounded by a capsule [3].

Radiographically, the lesion is well defined and the dense radiopaque central part is attached to the tooth root and is commonly surrounded by a radiolucent zone of uniform width, which represents the peripheral unmineralized tissues of the formative cellular layers and has a tendency to expand the cortical bone of the jaw [3].

Histologic examination reveals the presence of numerous round bodies, often fused together with a structure typical of cementum. The tumour appears to be encapsulated [1]. Histologically, differential diagnosis is with osteoid osteoma or benign osteoblastoma which are distinguished by characteristic x-ray and gross specimen findings [4],[5].

   References Top

1.Gorlin RJ in Goldman Thoma's Oral Pathology, 6th ed. Vol. 1. CV Mosby Company 1970. 505-506.  Back to cited text no. 1    
2.Norberg O. Zur Kenntnis der dyontogenetischen Geschwulste der Kieferknochen, Vjschr Zahnheilk 1930; 46: 321-355.  Back to cited text no. 2    
3.Weber AL. Imaging of paranasal sinuses and oromaxillofacial region. Radio Clin North Am 1993; 31 (1): 119.  Back to cited text no. 3    
4.Abrahm AM, Kirby JW, Melrose RJ. Cementoblastoma - A clinico-pathological study seven cases: Oral surgery, oral medicine and oral pathology 1974; 38: 394-403.  Back to cited text no. 4    
5.Aiyer RG, Rajagopal S. Benign cementoblastoma - A rare odontogenic neoplasm. Ind J Otolaryngol Head and Neck Surg 2000; 52 (3): 272-273.  Back to cited text no. 5    

Correspondence Address:
Sarita Magu
22/8 FM, Medical Campus, Rohtak-124001, Haryana
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