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Classification and external resources
ICD-O: 9280/0
DiseasesDB 34988
MeSH D009810

The odontoma is a hamartoma[1] of odontogenic origin.[2]

The average age of people found with an odontoma is 14,[3] and the condition is frequently associated with an unerupted tooth.

In 2011; 66% of odontogenic tumors are odontomas (University of Louisville School of Dentistry). 22% of odontogenic tumors are odontomas.[4]


There are two types: compound and complex.[5]

  • 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 radioopaque area with varying densities. It usually appears in the posterior maxilla or in the mandible.


  1. ^ Junquera L, de Vicente JC, Roig P, Olay S, Rodríguez-Recio O (2005). "Intraosseous odontoma erupted into the oral cavity: an unusual pathology". Med Oral Patol Oral Cir Bucal 10 (3): 248–51. PMID 15876969. 
  2. ^ "Oral Pathology Glossary O". Retrieved 2009-01-04. [dead link]
  3. ^ "Odontogenic tumors". Retrieved 2009-01-04. 
  4. ^ da Costa CT, Torriani DD, Torriani MA, da Silva RB (2008). "Central incisor impacted by an odontoma". J Contemp Dent Pract 9 (6): 122–8. PMID 18784868. 
  5. ^ Amado Cuesta S, Gargallo Albiol J, Berini Aytés L, Gay Escoda C (2003). "Review of 61 cases of odontoma. Presentation of an erupted complex odontoma". Med Oral 8 (5): 366–73. PMID 14595262.