Odontogenic Tumours

Question 1

Define Tumour

Answer 1

A swelling or excessive growth of tissue

Question 2

Define Neoplasm

Answer 2

New growth of tissue occurring outside of normal homeostatic mechanisms.
May be histologically/cytologically immature or abnormal

Question 3

Define Hamartoma

Answer 3

Mass of disorganised tissue native to the anatomical location.
Histological mature cells but arranged in a disorganised manner.
Develop as we develop

Question 4

Define Malignant

Answer 4

Disease process with potential for impairing quality of life and life expectancy. If untreated is likely to kill the patient.

Question 5

Define Benign

Answer 5

Disease process with limited potential for impairing life expectancy.
Unlikely to kill patient if untreated, but may persist/grown and impair quality of life.

Question 6

Define Odontomes

Answer 6

Abnormal growth of tooth forming tissue

Question 7

Give 2 examples of Invaginated odontome

Answer 7

-Deep cingulum pit
-Dens in dente

Question 7

Give examples of Odontomes

Answer 7

• Invaginated odontome
• Evaginated odontome
• Enamel pearl
• Complex odontome
• Compound odontome

Question 8

Give an example of Evaginated odontome

Answer 8

Talon cusp

Question 9

What is the difference between Compound odontoma vs Complex odontoma

Answer 9

• Compound odontoma = a “bag of teeth”
  -Complex odontoma = mass of disordered dental tissue

Question 10

What age group are odontomes most common in?

Answer 10

Any age but more common in teens.

Question 11

True or False: Odontomes have limited potential for growth

Answer 11

True

Question 12

True or False: Odontomes are usually incidental findings

Answer 12

True

Question 13

True or False: Odontomes are not associated with failure to erupt, missing teeth etc

Answer 13

False
Because odontomes may be associated with failure to erupt, missing teeth etc

Question 14

True or False: Odontomes are Radiolucent

Answer 14

False
Because Odontomes show Radiopacity (compound/complex)

Question 15

What is the treatment for Odontomes?

Answer 15

Removal

Question 16

Give 7 features of Ameloblastoma

Answer 16

• Tumour
• Painless
• Slow growing
• Locally aggressive/invasive
• Metastasis is very rare
• Recurrence more likely if not treated aggressively
• Origin is dental lamina

Question 17

What is the origin of Ameloblastoma?

Answer 17

Origin is dental lamina

Question 18

Ameloblastoma are 10x more common in which type of people?

Answer 18

10x more common in black African people

Question 19

Ameloblastoma more common in mandible or maxilla

Answer 19

mandible

Question 20

Ameloblastoma more common anteriorly or posteriorly

Answer 20

Posterior

Question 21

True or False: Bone expansion and Damage to teeth are related to Ameloblastoma

Answer 21

True

Question 22

What are the clinical features of Ameloblastoma

Answer 22

Slow growing, painless, expansile lesion
May be incidental finding

Question 23

What are the 3 classifications of Ameloblastoma?

Answer 23

• Follicular
• Plexiform
• Unicystic

Question 24

What type of investigation is needed to confirm diagnosis?

Answer 24

Biopsy

Question 25

What type of investigation is needed to assess extent?

Answer 25

radiology/CT

Question 26

What is the treatment for Periapical Cyst?

Answer 26

Enucleation

Question 27

What is the treatment for Keratocyst?

Answer 27

Enucleation/curettage/Carnoy’s

Question 28

What is the treatment for Ameloblastoma?

Answer 28

Local resection +/- reconstruction

Question 29

What is the treatment for Oral Cancer?

Answer 29

Wide excision, reconstruction, radiotherapy

Question 30

Name 3 other types of odontogenic tumours

Answer 30

• Cementoma
• Cemental dysplasia
• Cemento-osseous dysplasia

Question 31

Why do we need to be aware and prepared for odontogenic tumours?

Answer 31

Odontogenic tumours: less common but presentation overlaps with other more common diseases.