Odontome : The odontoma is a hamartoma of odontogenic origin. The average age of people found with an odontoma is 14, and the condition is frequently associated with an unerupted tooth. Odontomas are the most common odontogenic tumors. They are usually asymptomatic and are often discovered during routine radiography. Eruption of an odontome into the oral cavity is rare. The term odontome by definition alone refers to a tumor of odontogenic origin. In a broad sense, it means a growth with both the epithelial and mesenchymal components exhibiting complete differentiation, with the result that functional ameloblasts and odontoblasts form enamel and dentin. This enamel and dentin were usually laid down in an abnormal pattern because the organization of odontogenic cells failed to reach the normal state of morphodifferentiation. Odontomas are the most common type of odontogenic tumor and they constitute 22% of all odontogenic tumors of the jaws. In 2011; 66% of odontogenic tumors are odontomas (University of Louisville School of Dentistry). 22% of odontogenic tumors are odontomas. Some authors prefer to refer to it as hamartoma, not a true tumor. Classification : There are two types: compound and complex. A compound odontoma still has the three separate dental tissues (enamel, dentin and cementum), but may present a lobulated appearance where there is no definitive demarcation of separate tissues between the individual toothlets (or denticles). It usually appears in the anterior maxilla. The complex type is unrecognizable as dental tissues, usually presenting as a radio-opaque area with varying densities. It usually appears in the posterior maxilla or in the mandible.
Posted on: Mon, 04 Aug 2014 04:58:17 +0000
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