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opath 5 > Lin 1-26-14 > Flashcards

Lin 1-26-14 Flashcards

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
Q

eruption cysts

A
  1. soft
  2. transleucent swelling in the

gingival mucosa

overlying the crown of the

erupting deciduous or

permanent tooth

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26
Q

when you think youre dealing with eruption cyst waht do you do first

A

take a radiograph

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27
Q

tx for eruption cyst

A

no treatment

cyst spontaneously ruptures

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28
Q

an** uncommon **inflammatory odontogenic cyst in children

A

buccal bifurcation cyst

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29
Q

pathogenesis ___ but may be assocaited with __ __ __ which leads to buccal pocket formation

A

uncertain

buccal enamel extension = cervical enamel projection

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30
Q

with bee, enamel has apical projection have a ectopic projection on the root surface, this causes

A

pdl to no attach there and get a DEEP NARROW opening

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31
Q

a buccal bifurcation cyst happens most in which tooth

A

man 1st perm molar

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32
Q

for buccal bifurcation cyst

well circumscirbed raidoleuncy invovling the ___ __ and root area of the tooth

A

buccal bifurcation

also see the crown of the tooth tilted buccally

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33
Q

waht is the best radiogrpah used for buccal bifuration cyst

A

occlusal

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34
Q

histology is not specifc

similar to apcial peridontal cyst

for buccal bifurcation cyst

A

true

true

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35
Q

tx for buccal bifurcation cyst

A

enucleation [keep the tooth]

36
Q

why doesnt buccal bifurcation cyst happen in adults?

A
37
Q

same category as dentigerous cyst,

cyst taht occurs ___ or ___ of partially erupted MAN 3RD MOLARS

A

paradental cyst

38
Q

paradental cyst has a history of

A

pericoronitis

39
Q

is paradental cyst a dentigerous cyst

A

yes, still involved with the crown of an unerupted tooth

40
Q

waht is the most common odontogenic cyst

A

apical peridontal cyst

41
Q

what are the other 2 names of apical peridontal cyst

A

periapical cyst

radicular cyst

apical periodontal cyst

42
Q

apical peridontal cyst

A

inflammatory cyst assocaited with

**non - vital tooth **

43
Q

waht is the firs thing you do when you think a cyst is apical peridontal cyst

A

vitality test to estabilish diagnosis

44
Q

waht is the cause of apical peridontal cyst

A

infection spread through the root canal

45
Q

major root canal ___

accessory canal ___

apical peridontal cyst

A

periapica area = major root canal, most common

along the lateral aspect of the root= accessory canal.

46
Q

apical peridontal cyst is derived from

A

rest of malassez from the epithelial root sheath

47
Q

apical peridontal cysts enalrgges bc

A

increased from osmotic pressure within the lumen

48
Q

waht is the treatment of apical peridontal cyst

A

endo treatment or extraction

49
Q

lesions usually resolve after appropriate treatment. May heal as a __ scar epecially when __ __ lost

A

fibrous

cortical plates

50
Q

tf

somtimes need a 2nd biopsy to make sure the apical peridontal cyst has healed

A

true

51
Q

paical peidontal cyst radio features

A
  1. well defined
  2. location:
    - periapical area [classic]
    - interproximal area
  3. vary in size, can be large
52
Q

if see radioleunt lesion around an endo treated tooth can be two causes

A
  1. failed lesion
  2. biopsy to see waht it can be
53
Q

t f

biopsy if the size is huge and dont know for sure if its an apical peidontal cyst

A

true

54
Q

2 histological features of the apical peridontal cyst

A
  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
Q

___ apical peridontal cyst

after the infected TOOTH has been extracted

A

residual cyst

56
Q

radiograph features of residual cyst

A
  1. well defined
  2. corticated
  3. radioleuncy
57
Q

waht is another name for odontogenic keratocyst

A

keratocystic odontogenic tumor

58
Q

odonotgenic keratocyst

___ cyst.

cystic lining derived from ___ ___ ___

A

common

rests of dental lamina [rests of serres]

59
Q

a small amt of patients have multiple OKC and within this group some may have ___ ___ __ ___ ___

A

nevoid basal cell carcinoma syndrome

60
Q

OKC happns any age but specifically

A

adults

61
Q

OKC can be found anywehre in the jaw

most common site ____ ___ and ___

A

true

posterior man and ramus

62
Q

true or false OKC does not reoccur

sometimes has an aggressive clinical behavorio

A

false, significant recurrene rate

true aggressive can be

63
Q

another name of nevoid basal cell carcinoma syndrome

A

gorlin syndrome

64
Q

3 clincal fx of OKC

A
  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
Q

tx for OKC

A
  1. surgical excision with **peripheral osseous curettage **

**-or osteotectomy **

  1. FOLLOW UP IMPORTANT
66
Q

diagnosis of OKC is purely ____

A

histology

67
Q

histo features of OKC

A
  1. unilocular [most common]
    - can be multilocular
  2. well circumscrbied radioleuncy
  3. occurs **anywehre **in the jaws
68
Q

whenever you see cyst that looks like OKC must biopsy

TF

A

true

69
Q

pericoronal

unilocular radiolency

assocaited with unerupteed tooth DD =

A

dentigerous cyst

of OKC

70
Q

periapical

unilocular radioleuncy

assocaite with vital or non-vital tooth DD =

A

apical periodntal cyst

or OKC

71
Q

multilocular radiolucency DD=

A

ameloblastoma or OKC

72
Q

unilocualr radilecny

bt teeth DD =

A

lateral apica cyst

….

73
Q

tf

okc is purely diagnosed from histopatholgical features

A

true

74
Q

okc histopath features for diagnosis has a ___ epithlial lining

A

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
Q

OKC can be 2nd inflammed and the characteristic features may be lost.

specific diagnosis may not be able to render

A

true

76
Q

if OKC on the gingiva can be soft tissue nodule and look like a ___ and is not of clinical concern

A

fibroma

its a peripheral OKC and not a concern

77
Q

Orthokeratin odontogenic cyst

is ____ ___

not ___ __ and

do not ___ if manage properly

A

less aggressive

not syndrome related

do not recur

78
Q

3 histo features of orthokeratin odontogenic cyst

A
  1. orthokeratin
  2. promnent granular cell layer
  3. basal cell layer is NOT palisaded and
    - less hyperchromatic
79
Q

radiographic featrues of orthokeratin odontogenic cyst

A

unilocular radiolency

80
Q

tf

can treat orthokeratin with enucleation with currettage

A

true

do not need bone treatment like OKC

81
Q

__ ___ ___

less common than

DC

APC

OCK

A

lateral periodntal cyst

82
Q

lateral peridontal cyst

considered the ___ [intrabony] counterpart of

___ __ of the adult

A

central

gingival cyst of the adult

83
Q

t f

lateral periodntal cyst occurs on the lateral root surface of VITAL TOOTH

A

true

84
Q

radiogphaphhy of lateral peidontal cyst

A
  1. well circumscribked radioleuncy

lateral to the root[s]s of VITAL tooth

  1. msot are less than 1.0 cm
85
Q

LATERAL peridontal cyst can look liek 3 things

A
  1. apical periodotnal cyst
  2. OKC
  3. multilocualr or unilocular …
86
Q

histopath of lateral periodontal cysts

A
  1. lined mostly uniformed
    - flattened squamous cells
    - focal nodular thickening [epithelial plaques]
87
Q
A

opath 5 (7 decks)

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