Odontogenic Tumours Flashcards
Define Tumour
A swelling or excessive growth of tissue
Define Neoplasm
New growth of tissue occurring outside of normal homeostatic mechanisms.
May be histologically/cytologically immature or abnormal
Define Hamartoma
Mass of disorganised tissue native to the anatomical location.
Histological mature cells but arranged in a disorganised manner.
Develop as we develop
Define Malignant
Disease process with potential for impairing quality of life and life expectancy. If untreated is likely to kill the patient.
Define Benign
Disease process with limited potential for impairing life expectancy.
Unlikely to kill patient if untreated, but may persist/grown and impair quality of life.
Define Odontomes
Abnormal growth of tooth forming tissue
Give 2 examples of Invaginated odontome
-Deep cingulum pit
-Dens in dente
Give examples of Odontomes
- Invaginated odontome
- Evaginated odontome
- Enamel pearl
- Complex odontome
- Compound odontome
Give an example of Evaginated odontome
Talon cusp
What is the difference between Compound odontoma vs Complex odontoma
- Compound odontoma = a “bag of teeth”
-Complex odontoma = mass of disordered dental tissue
What age group are odontomes most common in?
Any age but more common in teens.
True or False: Odontomes have limited potential for growth
True
True or False: Odontomes are usually incidental findings
True
True or False: Odontomes are not associated with failure to erupt, missing teeth etc
False
Because odontomes may be associated with failure to erupt, missing teeth etc
True or False: Odontomes are Radiolucent
False
Because Odontomes show Radiopacity (compound/complex)
What is the treatment for Odontomes?
Removal
Give 7 features of Ameloblastoma
- Tumour
- Painless
- Slow growing
- Locally aggressive/invasive
- Metastasis is very rare
- Recurrence more likely if not treated aggressively
- Origin is dental lamina
What is the origin of Ameloblastoma?
Origin is dental lamina
Ameloblastoma are 10x more common in which type of people?
10x more common in black African people
Ameloblastoma more common in mandible or maxilla
mandible
Ameloblastoma more common anteriorly or posteriorly
Posterior
True or False: Bone expansion and Damage to teeth are related to Ameloblastoma
True
What are the clinical features of Ameloblastoma
Slow growing, painless, expansile lesion
May be incidental finding
What are the 3 classifications of Ameloblastoma?
- Follicular
- Plexiform
- Unicystic
What type of investigation is needed to confirm diagnosis?
Biopsy
What type of investigation is needed to assess extent?
radiology/CT
What is the treatment for Periapical Cyst?
Enucleation
What is the treatment for Keratocyst?
Enucleation/curettage/Carnoy’s
What is the treatment for Ameloblastoma?
Local resection +/- reconstruction
What is the treatment for Oral Cancer?
Wide excision, reconstruction, radiotherapy
Name 3 other types of odontogenic tumours
- Cementoma
- Cemental dysplasia
- Cemento-osseous dysplasia
Why do we need to be aware and prepared for odontogenic tumours?
Odontogenic tumours: less common but presentation overlaps with other more common diseases.
