Dr. Mazhar. I. Khan
Sapporo Dental College & Hospital,
• Odontomas are the developmental malformation of
the dental tissues.
• They are hamartomas also commonly known as
• They have all the basic histological structures of a
tooth but in a disoriented fashion or may vary
ETIOLOGY AND BEHAVIOUR
• Odontomas are hamartomas of
odontogenic epithelium and
• They are usually found between
the age of 10 and 20 years
• They are benign in nature.
• Most common sites are anterior
maxilla and posterior mandible.
In the past, complex type of classification was
devised to include developmental anomalies such as
dilated,invaginated and geminated Odontomas.
They are now simply classified as
• compound Odontomas
• complex Odontomas
•Probably produced by
localized multiple budding off
from the dental lamina and
formation of many tooth
•Consist of many separate,
small tooth like structures.
•Gives rise to a painless
swelling in the anterior part of
the jaws clinically.
•Radiographically seen as
separated densely calcified
•Histologically,the denticles are
embedded in fibrous
connective tissue having
• Irregular mass of hard and soft
dental tissue showing no
resemblance to a tooth.
• Clinically hard painless swelling
seen in young persons.
• Radiographically seen as a
radiopaque irregular mass when
fully calcified with areas of
densely radiopaque enamel.
• Histologically, tissues arranged in
a disordered arrangement
frequently in radial pattern.
• Multiple branching of pulp gives
a sponge like appearance.
• Obstruction of tooth eruption.
• Mass may erupt causing infection and abscess.
• Mass may undergo cystic change or resorption.
• The mass of tissues are removed by conservative
• They respond to enucleation
• Cawson RA,Binnie WH,Barrete AW,Speight P,Wright JM 1998 Lucas’s pathology of
tumors of the the oral tissues. Churchill livingston,Edinburgh.
• ^ Jonquiere L, de Vicente JC, Roig P, Olay S, Rodríguez-Recio O
(2005). "Intraosseous odontoma erupted into the oral cavity: an unusual
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• ^ "Oral Pathology Glossary O". Retrieved 2009-01-04.
• ^ "Odontogenic tumors". Retrieved 2009-01-04.
• ^ 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.
• ^ 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
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