Odontogenic Cysts/Tumors

most common odontogenic tumor

odontoma

what is the difference between a malignant ameloblastoma and ameloblastic carcinoma

metastases

fibro-osseous lesion of jaw most often encountered by dental practitioners

cemento-osseous dysplasia

most frequently occurs in african-american women

periapical cemento-osseous dysplasia

osteogenesis imperfecta and dentinogenesis imperfecta are associated with the same gene

false

squamous odontogenic tumors arise from

rest of malassez and rest of dental lamina

clear cell odontogenic carcinoma associated with what gene

ESWR1

cotton wool appearance 

paget’s disease 

most odontogenic tumors are

benign

most odontogenic tumors grow at a _____ rate

slow

ameloblastoma - asymptomatic/symtomatic

asymptomatic

most common site for oral lymphoma

palate

second most common odontogenic tumor

ameloblastoma

what is most commonly associated with graft-versus host disease

allogenic bone graft

“ghost lesion” (missing nucleus) associated with

calcifying odontogenic cyst

which benign entity can be aggressive

ameloblastoma

which benign entity can be aggressive

glandular odontogenic cyst

PTCH1 mutation associated with

nevoid basal cell carcinoma

cysts characteristically have 

epithelium lining 

periapical granuloma

mass of chronically inflamed granulation tissue

a chronic periapical granuloma may be

asymptomatic

on a radiograph a periapical granuloma appears as a

radiolucency

periapical granuloma’s occur in

non-vital teeth

what is benign but aggressive

odontogenic myxoma

periapical (redicular) cyst occurs in

non-vital teeth

most common jaw cyst

periapical (redicular) cyst

when is a periapical (redicular) cyst symptomatic

when acute

when is a periapical (redicular) cyst asymptomatic

when chronic

Lateral radicular cysts arise from

rest of malassez

pushing of structures usually indicates

benign lesions

which cyst has the highest likelihood of malignant transformation

residual cyst

residual cysts are notably located at 

previous extraction sites

what kind of lesions produce rushton bodies

chronic

most common location of buccal bifurcation cyst

mandibular 1st molar

most common developmental cyst

dentigerous cyst

most common location for dentigerous cyst (but can be anywhere)

mandibular 3rd molars

associated with crown of unerupted tooth - attached at CEJ

dentigerous cyst

marsupialization allows for 

shrinkage of lesion and for bone to fill in 

eruption cyst

soft tissue counterpart of dentigerous cyst

eruption cyst characteristics

no radiographic presentation

bluish

common in kids

where does the odontogenic keratocyst arise from 

rests of dental lamina

what direction do odontogenic keratocysts grow in

anterior-posterior

patients younger than 18 with multiple OKC’s should make you think what 

syndrome

unilocular and multilocular pertain to 

radiolucencies

if a PA cyst or lateral radicular cyst is restorable what is the tx

RCT or retreat/apico

what age group are buccal bifurcation cysts most common

5-13 years

what type of radiographic experience does a eruption cyst have

none

what grows in an anterior-posterior direction

odontogenic keratocyst OKC

what gender predilection do OKC’s have

male

what age range is associated with OKC’s

10-40 years

inheritance pattern for nevoid basal cell carcinoma syndrome

autosomal dominant

PTCH1 mutation is associated with 

nevoid basal cell carcinoma syndrome

OKC’s have what kind of tissue

parakeratinized

orthokeratinized epithelium

orthokeratinized epithelium

gingival cyst of newborn

most common area is between lateral/canine/premolars in mandible 75-80%

lateral periodontal cyst

although they look the same what’re the differences between the lateral radicular cyst and the lateral periodontal cyst

symptomatic vs asymptomatic respectively

occurance in non-vital/vital teeth respectively

most common area is canine/premolars area in mandible 60-75%

gingival cyst of adult

gingival cyst radiographic appearance

none

calcifying odontogenic cyst radiographic appearance

mixed

glandular odontogenic cyst radiographic appearance 

multilocular radiolucency 

lateral periodontal cyst occurs between 

vital teeth 

between odontogenic cysts and tumors which are more common

cysts

intraosseous ameloblastomas radio______

radiolucent

major difference between malignant ameloblastoma and ameloblastic carcinoma

metastasis vs no metastasis

2/3 tumor occurence in gender

females

2/3 tumor location of occurrence

anterior maxilla

2/3 tumor occurrence radiographically

radiopaque

2/3 tumor occurrence in tooth

unerupted permanent canine

adenomatoid odontogenic tumor

2/3 tumor

most common location for ameloblastoma

posterior mandible

what is associated with EWSR1-ATF1

clear cell odontogenic carcinoma

radiographic appearance is honey-comb/soap bubble like

ameloblastoma and odontogenic myxoma

most common location is root of the mandibular first molar

cementoblastoma

cementoblastoma radiographic appearance

mixed or mainly radiopaque

ameloblastic fibroma age predilection

first two decades

ameloblastoma age predilection 

40-50’s

adenomatoid odontogenic tumor most commonly found in

maxilla

compound odontoma radiographically

radiopaque w/ RL rim - resembles multiple mini teeth

complex odontoma radiographically

radiopaque - irregilar calcifications

where does the periapical radicular cyst arise from

rest of malassez

where does the gingival cyst of an adult arise from

rest of serres

BRAF mutation associated with

ameloblastoma