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Cementoblastoma
Cementoblastoma, or benign cementoblastoma, is a relatively rare benign neoplasm of the cementum of the teeth. It is derived from ectomesenchyme of odontogenic origin.〔Leena S Sankari and K Ramakrishnan, Benign cementoblastoma, ''Journal of Oral and Maxillofacial Pathology, ''2011 Sep-Dec; 15(3): 358–360 at http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3227271/〕 Less than 0.69%–8% of all odontogenic tumors.
==Clinical features==
Cementoblastoma usually occurs in people under the age of 25, particularly males. It usually involves the permanent mandibular molars or premolars.〔Huber AR, Folk GS. Cementoblastoma. ''Head Neck Pathol''.2009;3:133–5 at http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2715464/?report=reader〕 The involved tooth usually has a vital pulp. It is attached to the tooth root and may cause its resorption, may involve the pulp canal, grows slowly, tends to expand the overlying cortical plates, and, except for the enlargement produced, is usually asymptomatic. This involves the buccal and lingual aspects of the alveolar ridges. But may be associated with diffuse pain and tooth mobility, but the tooth is still vital.
Since a cementoblastoma is a benign neoplasm, it grossly forms a mass of cementum-like tissue as an irregular or round mass attached to the roots of a tooth, usually the permanent mandibular first molar.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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