cysts of the jaw Flashcards
t/f cysts are slowly growing and asymptomatic
yes. persistent and progressive
radiographic appearance of cysts
cortigated border, well defined
to dx cysts, must find
clinical, radiographic, and microscopic features
3 inflammatory cysts
buccal bifurcation cyst, radicular and residual cyst
where does the epitheilum come from if a cyst is in the bone
reduced enamel epithelium, enamel organ, dental lamina, HERS, rests of malassez
only way to really tell what something is is through
microscopic evidence
most of the cysts are lined by what type of epithelium
nonkeratinized stratified squamous epithelium
radicular cyst
necrotic deris and bacteria of nonvital pulp
inflammation stimulates with and forms a cysts
most common cyst of the jaw
radicular cyts
radicular cysts have what kind of border
corticated
healing cysts looks like
bone grows from outside in with rolled border
residual cyst happens
after extraction without curettage and lining is left
lateral periodontal cyst
75-80% in pm/canine area
mandible>max
associated with vital or nonvital cysts
less than 1cm
lat periodontal cyst can look like
lat radicular cyst. must test for vitality (nonvital can be both)
most common developmental odontogenic cyst
dentigerous cyst
features of dentigerous cyst
attached to the cemento-enamel junction of an unerupted tooth
most common with 3rd molars and max canines
clinical features of cysts
cortigated, well defined
t/f dentigerous cysts can grow very large
true
t/f most of the time, dentigerous cysts are unilocular
true
guidelines of dentigerous cysts
2-3mm hyperplastic follicle
what can be on the differential with dentigerous cysts
dentigerous cysts, okc, ameloblastoma..
tx of dentigerous cysts
enucleation of removal of the affected tooth
marsupialization with extraction
little tendency to recur when completely removed
eruption cyst
st analogue of a dentigerous cyst
what is in an eruption cyst
cystic fluid and/or blood bt an erupting tooth and the dental follicle, completely OUT OF the bone
if there is blood present, what color is an eruption cyst
purple
tx of an eruption cyst
usually none bc tooth will erupt
t/f an eruption cyst is in the bone
false
t/f an eruption cyst has the same histologic features as a dentigerous cyst
true. formed from the REE. you’d need the location and history in order to tell which one it is
if tx is needed, for an eruption cyst, what do you do
enucleation, removal of associated tooth
marsupialization
excellent prognosis
what was an odontogenic keratocyst formerly known as
keratocystic odontogenic tumor
what cellls do odontogenic keratocysts arise from
dental lamina
t/f odonotgenic cysts can occur in any odontogenic location
true
t/f odonotgenic keratocys cause expansion in mandible
flase
what cysts have daughter cysts
odontogenic keratocysts
what cysts have the most growth potential than any other odontogenic cyst
odontogenic keratocyst
t/f odonotgenic keratocysts have a higher rate of resorption
true
radiographic features of an odontogenic keratocyst
well defined
corticated
uni or multilocular
can displace teeth, roots, and perforate cortical plate
t/f can odontogenic keratocysts cause expansion in the ramus
true
can a dentigerous cyst cause expansion
yes, and an okc can cause expansion only in the ramus
in your differential dx of okc, what else woulld you include
benign odontogenic tumor, benign non-odontogenic tumor
management of okc
surgical excision with peripheral ostectomy, carnoy solution (chemical peripheral osectomy)
recurrence rate of okc
30%
t/f okc can mimic other cysts and tumors
true
t/f okc have an association with nevoid basal cell carinoma syndrome
true
gorlin syndrome
nevoid basal cell carcinoma syndrome
clinical findings of gorlin syndorme
multiple basal cell carcinoma multiple odotogenic keratocysts calcified falx cerebri rib anomalies palmar plantar pits ocular hypertelorism enlarged head spina bifida
tx of gorlin syndrome
non life threatening
skin cancers important for prognosis
enucleation of keratocysts
t/f a gorlin cyst can act as a cyst or solid benign neoplasm
true. aka calcifying cyctic odotogenic tumor
t/f a calcifying odontogenic cyst can produce a calcifying product and have radiopaque areas
true
the radiopaque cyst
calcifying odontogenic cyst (can sometimes be radiolucent)
amount of calcifying odontogenic cysts that show radiopacities and are unerupted
30% and 30%
most common odontogenic cyst or tumor that is on the gingiva, outside the bone
peripheral calcifying odontogenic cyst
what cyst has ghost cells?
peripheral calcifying odontogenic cyst
tx of calcifying odontogenic cyst
surgery, recurrence uncommon
what is associated with buccal enamel extensions or enamel pearls
buccal bifurcation cysts
buccal bifurcation cysts have the same histologic features as what
an inflamed dentigerous cyst or radicular cyst
tx of buccal bifurcation cyst
enucleation
involved tooth can often be maintained
gingival cyst of the adult is basically what
a lateral periodontal cyst on the gingiva in the area of the mand pms
ginigval cyst of the adult has the smae histologic features as what
lateral periodontal cyst
tx of gingival cysts of the adult
simple excision
excellent prognosis
what is a cyst
pathologic sack of cavity with a central lumen lined by epithelium
t/f cysts can become destructive if not treated
true
general tx of cysts
simple enucleation or aggressive curettage
