cysts + odontogenic tumours

Question 1

which cyst develops from epthelial rests of malassez

Answer 1

radicular cyst

Question 2

which cyst develops from reduced enamel epithelium

Answer 2

dentigerous/eruption cyst

Question 3

which cysts develop from remnants of dental lamina (cell rests of serres)

Answer 3

keratocyst
lateral periodontal cyst
gingival cyst in adult

Question 4

2 cysts that grow through medullary bone and don’t expand jaw

Answer 4

keratocyst

solitary bone cyst

Question 5

histopathology of radicular cyst

Answer 5

non-keratinised squamous ep
wall = fibrous inflammatory cells
cholesterol clefts, haemosidens, rushton bodies

Question 6

which cyst develops from junctional epithelimum

Answer 6

paradental cyst

Question 7

pathology of keratocyst

Answer 7

straftied squamous ep
corrugated surface
well defined basal cell layer - palisading
parakeratosis
satellite cells

Question 8

2 cysts with parakeratinised ep

Answer 8

keratocyst

gingival cyst

Question 9

2 multilocular cysts

Answer 9

keratocyst

aneurysmal bone cyst

Question 10

cyst aspirate showing keratocyst

Answer 10

low protein <40g/l

low albumin

Question 11

what are described as soap bubble on radiographs

Answer 11

ameloblastoma

odontogenic myxoma

Question 12

salty taste in mouth may be presentation of what cyst

Answer 12

nasopalatine

Question 13

risk for enucleation of nasopalatine cyst

Answer 13

damage to nasopalatine neurovascular bundle

Question 14

clinical sign that would suggest amaeloblastoma and not keratocyst

Answer 14

ameloblastoma more likely to cause lingual expansion

Question 15

3 risks of having keratocyst removed

Answer 15

IAN damage
jaw fracture
recurrence 40%

Question 16

treatment for radicular cyst

Answer 16

end +/- enucleation (may require apicectomy)