Odontoma

Author :

Sindhura Anamali B.D.S., M.S. Diplomate Of ABOMR.
Clinical Assistant Professor The University of Iowa
sindhura-anamali@uiowa.edu

Published on : 14 Oct 2019

Odontoma:

Odontoma is a benign tumor that is characterized by the production of mature enamel, dentin, cementum and pulp tissue

They are the most common odontogenic tumor

Usually detected in the second decade of life

Odontomas are slow growing and have limited growth potential

Odontomas can interfere with normal eruption

They are usually associated with permanent teeth and cause delayed eruption and or impaction of permanent teeth in the area they are present

Odontoma Classification:

Odontomas are classified as:

Compound Odontoma

Complex Odontoma

Compound Odontoma:

More commonly seen than complex odontoma

Equal predilection for males and females

Commonly seen in the maxilla

Anterior region

Associated with the crown of an unerupted tooth

Radiographic Features:

Well-defined, radiopaque area surrounded by a radiolucent capsule and a corticated border

Internal structure is radiopaque with multiple small tooth like entities

Complex Odontoma:

Less commonly seen when compared to compound odontoma

High predilection for females ( 60 % )

More commonly seen in the mandible

Posterior regions

First – second molar region

Radiographic Features:

Well-defined, radiopaque area, surrounded by a radiolucent capsule and a corticated border

Internal structure is mostly radiopaque – presents as an irregular mass of calcified tissue

Differential diagnosis:

Compound Odontoma

Classic presentation seldom confused with any other lesion

Complex Odontoma

Ossifying fibroma

Compound Odontoma - Example 1
Compound Odontoma in the region of the maxillary right lateral showing multiple small denticles

Compound Odontoma – Example 2
CBCT images: lingual to the mandibular right premolars showing multiple small denticles within same

Complex Odontoma – Example 1
CBCT images: Complex Odontoma(red arrows) associated with the crown of the mandibular right third

Complex Odontoma - Example 2
CBCT images: Complex Odontoma(outlined in red arrows) associated with the crown of the maxillary

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