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opath 5 > Lin 1-26-14 > Flashcards

Lin 1-26-14 Flashcards

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1
Q

Odontoma is this a true tumor

A

no not a true tumor

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2
Q

Dentigerous cyst is the ____ most common odontogenic cyst

waht is the first most common

A

2nd most common

first = periodontal cyst

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3
Q

____ is the most common developmental odonotgenic cyst

A

dentigerous cyst

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4
Q

dentigerous cyst

fluid accumulation bt the crown of the ___ tooth and ____ tissue

A

unerupted

follicular

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5
Q

dentigerous cysts is derived from _____ _____ epithelium

and has ____ shape

A

reduced enamel

balloon

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6
Q

clinically

dentigerous cyst has to have an asociation with ____

of an ___ tooth

A

crown

UNERUPTED

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7
Q

where is the most common dentigerous cysts

____

A

Man 3rd Molars

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8
Q

rarely does dentigerous cyst involve ___ ___

A

deciduous tooth

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9
Q

most dentigerous cyst are small

if large, uncommon, and due to increased size usually is caused excessive accumulation of ___ by inflamm of presence of high numbers of ___ cells

A

flud

mucus cells

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10
Q

in the diff diagnosis for dentigerous cyst

conisder:

_______

____

A

odontogenic keratocyst

unicystic ameloblastoma

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11
Q

usually discover dentigerous syst in young adults

10 - 30 yo

TF

A

true

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12
Q

what is the tx and prognosis of dentigerous cyst

A

surgical removal

excellent

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13
Q

waht is the most common type of epi involved with dentigerous cyst

A

stratisfied sq epit

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14
Q

true f

you can use expansion of the bone as a diff diagnosis of dentigerous cyst

A

FALSE, cant used expansion to exclude or confirm diagnosis

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15
Q

does dentigerous cyst reoccur

A

no

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16
Q

_____ radioleuncy associated with CROWN ____ of an UNERUPTED tooth

A

unilocular

pericoronal

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17
Q

the attachment of the cyst is at hte ___ in most cases of dentigerous cyst

A

CEJ

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18
Q

the border of the dentigerous cyst is ____ and ___

A

well - defined and sclerotic

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19
Q

the cystic lining of dentigerous cyst

  1. ____ epi
  2. ______
A

. non - KERATINIZED epi

multipotentil

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20
Q

the conn tissue wall of dentigerous cyst resemble

_____ ____

A

dental papilla

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21
Q

when the cyss is sign inflamed, the histology is indistinguishable from ___ ___ cyst

A

apical peridontal cyst

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22
Q

when biopsy specimen not contains ___ ___, it may be misdiagnosed when no clinical 411 is provided

A

cystic lining

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23
Q

___ is a soft tissue analogue of the dentigerou cyst and the tooth has ERUPTED and the follicular tissue is intact, WE HAVE A TUMOR LIKE SOFT TISSUE MASS

A

eruption cyst

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24
Q

usually affects ___

A

young children less than 10 yo

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25
eruption cysts
1. soft 2. transleucent swelling in the gingival mucosa overlying the crown of the erupting deciduous or permanent tooth
26
when you think youre dealing with eruption cyst waht do you do first
take a radiograph
27
tx for eruption cyst
no treatment cyst spontaneously ruptures
28
an** uncommon **inflammatory odontogenic cyst in children
buccal bifurcation cyst
29
pathogenesis ___ but may be assocaited with __ \_\_ __ which leads to buccal pocket formation
uncertain buccal enamel extension = cervical enamel projection
30
with bee, enamel has apical projection have a ectopic projection on the root surface, this causes
pdl to no attach there and get a DEEP NARROW opening
31
a buccal bifurcation cyst happens most in which tooth
man 1st perm molar
32
for buccal bifurcation cyst well circumscirbed raidoleuncy invovling the ___ \_\_ and root area of the tooth
buccal bifurcation also see the crown of the tooth tilted buccally
33
waht is the best radiogrpah used for buccal bifuration cyst
occlusal
34
histology is not specifc similar to apcial peridontal cyst for buccal bifurcation cyst
true true
35
tx for buccal bifurcation cyst
enucleation [keep the tooth]
36
why doesnt buccal bifurcation cyst happen in adults?
37
same category as dentigerous cyst, cyst taht occurs ___ or ___ of **partially erupted** MAN 3RD MOLARS
paradental cyst
38
paradental cyst has a history of
pericoronitis
39
is paradental cyst a dentigerous cyst
yes, still involved with the crown of an unerupted tooth
40
waht is the most common odontogenic cyst
apical peridontal cyst
41
what are the other 2 names of apical peridontal cyst
periapical cyst radicular cyst apical periodontal cyst
42
apical peridontal cyst
inflammatory cyst assocaited with ## Footnote **non - vital tooth **
43
waht is the firs thing you do when you think a cyst is apical peridontal cyst
vitality test to estabilish diagnosis
44
waht is the cause of apical peridontal cyst
infection spread through the root canal
45
major root canal \_\_\_ accessory canal \_\_\_ apical peridontal cyst
periapica area = major root canal, most common along the lateral aspect of the root= accessory canal.
46
apical peridontal cyst is derived from
rest of malassez from the epithelial root sheath
47
apical peridontal cysts enalrgges bc
increased from osmotic pressure within the lumen
48
waht is the treatment of apical peridontal cyst
endo treatment or extraction
49
lesions usually resolve after appropriate treatment. May heal as a __ scar epecially when __ \_\_ lost
fibrous cortical plates
50
tf somtimes need a 2nd biopsy to make sure the apical peridontal cyst has healed
true
51
paical peidontal cyst radio features
1. well defined 2. location: - periapical area [classic] - interproximal area 3. vary in size, can be large
52
if see radioleunt lesion around an endo treated tooth can be two causes
1. failed lesion 2. biopsy to see waht it can be
53
t f biopsy if the size is huge and dont know for sure if its an apical peidontal cyst
true
54
2 histological features of the apical peridontal cyst
1. an inflamed cyst lining epi = non keratized strastifed squamous epithelium - **epithelium exhibits exocytosis** [intraepithelial inflamm] - **spongiosis** [intracellulr edema of epithelium] 2. conn tissue = granulation tissue - mixed inflammation [very vascular and very inflammed] - cholestrol clefts, dystropic calcification
55
\_\_\_ apical peridontal cyst after the **infected TOOTH has been extracted**
residual cyst
56
radiograph features of residual cyst
1. well defined 2. corticated 3. radioleuncy
57
waht is another name for odontogenic keratocyst
keratocystic odontogenic tumor
58
odonotgenic keratocyst \_\_\_ cyst. cystic lining derived from ___ \_\_\_ \_\_\_
common rests of dental lamina [rests of serres]
59
a small amt of patients have multiple OKC and within this group some may have ___ \_\_\_ __ \_\_\_ \_\_\_
nevoid basal cell carcinoma syndrome
60
OKC happns any age but specifically
adults
61
OKC can be found anywehre in the jaw most common site ____ \_\_\_ and \_\_\_
true posterior man and ramus
62
true or false OKC does not reoccur sometimes has an aggressive clinical behavorio
false, significant recurrene rate true aggressive can be
63
another name of nevoid basal cell carcinoma syndrome
gorlin syndrome
64
3 clincal fx of OKC
1. very thin, friable cyst wall [not uncommon for a small piece fall out when surgical excision and reoccurs] 2. can be viewed as neoplasm and not simple cyst 3. epithelial budding - daughter cysts = cell like cyst
65
tx for OKC
1. surgical excision with **peripheral osseous curettage ** **-or osteotectomy ** 2. FOLLOW UP IMPORTANT
66
diagnosis of OKC is purely \_\_\_\_
histology
67
histo features of OKC
1. unilocular [most common] - can be multilocular 2. well circumscrbied radioleuncy 3. occurs **anywehre ****in the jaws**
68
whenever you see cyst that looks like OKC must biopsy TF
true
69
pericoronal unilocular radiolency assocaited with unerupteed tooth DD =
dentigerous cyst of OKC
70
periapical unilocular radioleuncy assocaite with vital or non-vital tooth DD =
apical periodntal cyst or OKC
71
multilocular radiolucency DD=
ameloblastoma or OKC
72
unilocualr radilecny bt teeth DD =
lateral apica cyst ....
73
tf okc is purely diagnosed from histopatholgical features
true
74
okc histopath features for diagnosis has a ___ epithlial lining
cystic epithelial lining 1. uniformly - thin - 6 - 10 cell layer thick 2. corrugated **parakeratin** SURFACE - uneven appearance 3. palisaded and hyperchromatic **basal cell layer**
75
OKC can be 2nd inflammed and the characteristic features may be lost. specific diagnosis may not be able to render
true
76
if OKC on the gingiva can be soft tissue nodule and look like a ___ and is not of clinical concern
fibroma its a peripheral OKC and not a concern
77
Orthokeratin odontogenic cyst is ____ \_\_\_ not ___ \_\_ and do not ___ if manage properly
less aggressive not syndrome related do not recur
78
3 histo features of orthokeratin odontogenic cyst
1. orthokeratin 2. promnent granular cell layer 3. basal cell layer is NOT palisaded and - less hyperchromatic
79
radiographic featrues of orthokeratin odontogenic cyst
unilocular radiolency
80
tf can treat orthokeratin with enucleation with currettage
true do not need bone treatment like OKC
81
\_\_ ___ \_\_\_ less common than DC APC OCK
lateral periodntal cyst
82
lateral peridontal cyst considered the ___ [intrabony] counterpart of \_\_\_ __ of the adult
central ## Footnote **gingival cyst of the adult**
83
t f lateral periodntal cyst occurs on the lateral root surface of VITAL TOOTH
true
84
radiogphaphhy of lateral peidontal cyst
1. well circumscribked radioleuncy lateral to the root[s]s of VITAL tooth 2. msot are less than 1.0 cm
85
LATERAL peridontal cyst can look liek 3 things
1. apical periodotnal cyst 2. OKC 3. multilocualr or unilocular ...
86
histopath of lateral periodontal cysts
1. lined mostly uniformed - flattened squamous cells - focal nodular thickening [epithelial plaques]
87

opath 5 (7 decks)

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