Cysts Flashcards
List 5 examples of epithelial, developmental odontogenic cysts
- Dentigerous cyst (associated with unerupted 8s and 3s)
- Eruption cyst
- Gingival cyst of infants
- Lateral periodontal cyst
- Odontogenic keratocyst
List 3 types of epithelial inflammatory cysts
- Radicular (apical or residual) cyst
- Paradental cyst
- Buccal bifurcation cyst
1 examplesof epithelial NON-odontogenic developmental cysts
- Nasopalatine duct cyst
2 examples of NON-epithelial jaw cysts
- Solitary bone cyst
- Aneurysmal bone cyst
- traumatic bone cyst
3 origins of odontogenic cysts
- Epithelial rests of serrez
- Epithelial rests of malassez
- Reduced enamel epithelium
Pathogenesis of cyst development:
- Stimulation and proliferation of resting epithelium
- Develops into a cavity within the bone
- Osmotic pressure increases, size increases
- Resorption of bone via inflammatory factors
What is the most common type of cyst in the jaw
Radicular cyst (periapical cyst)
Describe the histology of a radicular cyst
(Periapical cyst - inflammatory)
May start as a periapical granuloma
Lined by non-keratinised stratified squamous epithelium, lumen filled with cholesterol cleft. FCT wall with intence inflammatory cells.
What is a paradental cyst (inflammatory cyst)
Inflammatory cyst causedd by pericoronitis
Describe the appearnce of an eruption cyst
- Associated with erupting tooth but in soft tissue
- Bluish swelling
- Spontaneous resolution
What are the two variants of the lateral periodontal cyst
- Botyroid cyst
- Glandular odontogenic cyst
Rare, recenty recognised benign cyst with an aggressive behaviour. Odontogenic origin.
Glandular odontogenic cyst.
What cyst is this describing:
Thin, fibrous wall with uniform 6-8 layers of stratified squamous epithelium with flattened parakeratin.
Basal cell layer is a palisaded layer of cuboidal cells.
Odontogenic keratocyst
Name of syndrome which presents with OKCs younger age, more satellite cells, and multiple BCCS
Nevoid Basal cell Carcinoma Syndrome
What gene is associated with Nevoid Basal CEll carcinoma syndrome, and OKCs
PTCH gene (tumour suppressor gene)
Uncommon developmental cyst that arises in the incisive canal
Nasopalatine duct cyst
Place these in order of frequency:
- Dentigerous Cyst
- Radicular cyst
- Nasopalatine cyst
- OKC
- Radicular cyst
- Dentigeous cyst
- OKC
- Nasopalatine cyst
How should non-vital teeth be managed with are in relation to cysts?
Root fill 24 hours prior to surgery, or at time or surgery, possibly with apicetomy.
What is the gold standard of treatment for cysts?
Enucleation and primary closure
4 indications for marsupialization or decompression of cysts, as opposed to enucleation
- Unacceptable risk of tissue injury
- Size of cyst
- Difficult surgical access
- Extent of surgery
More radical intervention for tx of cysts when enucleation and decompression are not appropriate options:
Resection
What is the usual treatment managmeent for soft tissue cysts?
Excision (enucleation difficult due to soft tissue surrounding)
