Week 2 Curtin: Odontogenic Tumours Flashcards
1
Q
What are features of odontogenic tumours?
A
- Vital tooth with periapical radiolucency
- Vital tooth with root resorption
- Displaced teeth
- Bony expansion
2
Q
What are odontogenic tumours?
A
Neoplastic growths originating from tissues that form teeth and periodontal tissues
3
Q
What is the most common odontogenic tumour?
A
Odontoma
4
Q
What are features of ameloblastoma?
A
- Common in India
- Aggressive, painless swelling, destroying cortex and expanding B space.
- Multilocular
- Vital teeth
- If left untreated can cause pathological # of md
5
Q
What is odontogenesis?
A
Teeth formed by epithelial invaginations which break into different layers
6
Q
What are histopathological features of ameloblastoma?
A
- Discrete islands of tumour
- Enclose loosely arranged polyhedral cells
- Peripheral cuboidal or columnar cells
- Soap bubble appearance
7
Q
Describe histopathological features of odontogenic keratocysts?
A
- Walls very thinly lined with parakeratinised epithelium
- Loss of rete pegs
- Corrugated surface
- Thin friable fibrous capsule
- Folded cyst wall
- Epithelial lining weakly attached to capsule
8
Q
What is a dentigerous cyst?
A
- Assoc with unerupted tooth, attached at CEJ
- May displace tooth
- No root resorption
- No neurological symptoms
- Fluid between REE & crown
9
Q
What are tx options for cysts?
A
- Enucleation: total removal of a cystic lesion
- Marsupialisation: creating a surgical window in the wall of the cyst, evacuating the contents of the cyst. Dec intracystic pressure and promotes shrinkage of the cyst and bone fill.
10
Q
What is this + tx?
A
- Radicular cyst
- Can enucleate cyst and do apicoectomies to save some teeth.
11
Q
What are characteristics of odontogenic keratocysts?
A
- Teeth test vital
- Root resorption
- Thin lining with keratin
- Recurrence common
