Odontogenic Mixed and RO Lesions

Question 1

What are the characteristics of Calcified odontogenic cyst (Gorlins Cyst)?

Answer 1

Well defined radiolucent or mixed lesion.

Question 2

Characteristics of Calcifying epithelial odontogenic tumor? Treatment?

Answer 2

Benign tumor, slow growing, well defined, Mixed radiopaque.

-Treatment with Conservative surgery.

Question 3

What is the 2/3rd rule of Adenomatoid Odontogenic Tumor? Other characteristics? Radiographic?

Answer 3

2/3rd occurrence in..

• Females
• Teenagers
• Anterior
• Maxilla
• Associated with unerupted tooth.

Does not infiltrate bone and easily removed.
Radiographic: Mixed slow growing

Question 4

What are the characteristics of Ameloblastic Fibro-odontoma? Radiographic?

Answer 4

• Represents a developing odontoma
• Always under age 20
• Does not infiltrate surrounding bone
• Conservative removal.

Radiographic: Mixed, slow growing,

Question 5

What is an odontoma? Radiographic? Types?

Answer 5

Odontogenic Hamartoma

Radiograph: Radiopaque area surrounded by radiolucent line. Slow growing.

1. Compound: Multiple tooth-like structures
2. Complex: Does not resemble a tooth. Big mass

Question 6

What is the spectrum of odontomas?

Answer 6

Ameloblastic Fibroma–>Ameloblastic fibro-odontoma–>Odontoma.

Question 7

What is a cementoblasoma? Radiographic? Characteristics? Treatment?

Answer 7

Benign lesion of cementoblasts.

• Radiopaque mass, surrounded by radiolucent line then radiopaque line. Fused to tooth root and causes partial root resorption.
• Pain and swelling sometimes.
• Treatment: Remove lesion and tooth.