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The recurrence rate is 10-15%. [5] Franklin and Pindborg reported a recurrence rate of 14%. [6] It is considered to have a recurrence rate much lower than that of ameloblastoma. Malignant metastasis has been reported. [1]
Cementoblastoma, or benign cementoblastoma, is a relatively rare benign neoplasm of the cementum of the teeth. It is derived from ectomesenchyme of odontogenic origin, with the formation of cementum-like tissue around the associated tooth root. [2] Cementoblastomas represent less than 0.69–8% of all odontogenic tumors. [2]
The annual incidence rates per million for ameloblastomas are 1.96, 1.20, 0.18 and 0.44 for black males, black females, white males and white females respectively. [29] Ameloblastomas account for about one percent of all oral tumors [ 17 ] and about 18% of odontogenic tumors. [ 30 ]
Ameloblastic fibromas contain both of these tissues, and its name is derived from them. It is a neoplasm, meaning it is a mass of abnormal growth of cells or tissue. If the mass contains hard dental tissues they are known as odontoma, which are not true neoplasm, but classified as hamartomatous lesions. [1]
Specifically, it is a dental hamartoma, meaning that it is composed of normal dental tissue that has grown in an irregular way. It includes both odontogenic hard and soft tissues. [1] As with normal tooth development, odontomas stop growing once mature which makes them benign. [6] The average age of people found with an odontoma is 14. [7]
Calcifying odontogenic cyst (COC) is a rare developmental lesion that comes from odontogenic epithelium. [2] It is also known as a calcifying cystic odontogenic tumor, which is a proliferation of odontogenic epithelium and scattered nest of ghost cells and calcifications that may form the lining of a cyst, or present as a solid mass.
Though it is generally regarded as benign, there have been cases of its malignant transformation into ameloblastic fibrosarcoma [5] and odontogenic sarcoma. [6] Cahn LR and Blum T, believed in "maturation theory", which suggested that AFO was an intermediate stage and eventually developed during the period of tooth formation to a complex ...
Commonly known as a dental cyst, the periapical cyst is the most common odontogenic cyst. It may develop rapidly from a periapical granuloma , as a consequence of untreated chronic periapical periodontitis .