Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

BDS4 SCR > cysts > Flashcards

cysts Flashcards

(67 cards)

Start Studying
1
Q

what is a cyst

A

pathological cavity filled with fluid, semi-fluid or gaseous contents not created due to the accumulation of pus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what are the odontogenic developmental cysts (3)

A

odontogenic keratocyst
dentigerous cyst (eruption)
lateral periodontal cyst

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what are the inflammatory odontogenic cysts

A

radicular cyst (and residual)
inflammatory collateral cysts (paradental, buccal bifurcation)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

name 3 non odontogenic cysts

A

nasopalatine duct cyst
solitary bone cyst
aneurysmal bone cyst

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what are the odontogenic sources of epithelium and what cysts may arise from each

A

rests of mallasez - radicular
rests of serres - OKCs, lateral periodontal
reduced enamel epithelium - dentigerous and eruption

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

epidemiology of radicular cysts
- gender
- age
-location

A

M>F
30s and 40s
maxilla 60%, mandible 40% and can affect any tooth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

process of radicular cyst formation

A

pulp necrosis
periapical periodontitis
periapical granuloma
radicular cyst

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

how may a radicular cyst present if it perforates the cortex

A

bluish, fluctuant submucosal swelling

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

radiographic presentation of radicular cyst

A

always associated with non vital tooth
well defined round/ oval radiolucency
corticated margins continuous with lamina dura of non vital tooth
large lesions may displace adjacent structures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what may be seen radiographically in long standing radicular cysts

A

external root resorption
dystrophic calcification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

dystrophic calcification

A

deposition of calcium salts in tissues in the absence of systemic mineral imbalance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

2 suggested methods of how radicular cysts form

A

proliferation of rests of mallasez within chronic periapical granuloma then
1. proliferating epithelium sees central necrosis as no blood flow leaving behind a cavity
2. epithelium proliferates to surround an area of fluid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

how do radicular cysts grow

A

hydrostatic pressure - all parts of cyst increase in size at same rate and same time (ballooning)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

contents of radicular cyst

A

watery straw coloured fluid - semi solid brownish material

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

name 3 histological features of epithelium that may be seen in radicular cysts

A

cholesterol clefts
mucous metaplasia
rushton bodies

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

mucous metaplasia

A

epithelial cells become mucous secreting cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

rushton bodies
(hyaline)

A

only present in odontogenic cysts
no diagnostic significance
produce unusual red substance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

cholesterol clefts

A

when biopsy is processed, cholesterol is dissolved out leaving spaces known as cholesterol clefts
cholesterol is released when RBCs are broken down. deposits of haemosiderin are commonly associated (iron storage after RBC breakdown)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

lateral radicular cyst

A

associated with accessory canal
located at side of tooth rather than apex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

residual cyst

A

radicular cyst which persists after loss of tooth or after tooth has been root treated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

inflammatory collateral cysts

A

inflammatory odontogenic cysts
associated with a vital tooth
collective term for paradental cyst and buccal bifurcation cyst

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

paradental cyst

A

distal aspect of partially erupted M3Ms
inflammatory stimulus often pericoronitis
well defined radiolucency related to neck of tooth and coronal third of root

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

buccal bifurcation cyst

A

typically occurs at buccal aspect of mandibular 1st molar
occurs in children

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

epidemiology of dentigerous cysts
- age
- gender
- location

A
  • 10s-30s
    -M>F
  • mandible >maxilla
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
dentigerous cyst
developmental odontogenic cyst associated with crown of unerupted and usually impacted tooth cystic change of dental follicle
26
radiographic presentation of dentigerous cyst
corticated margins attach to CEJ tooth involved may be displaced a considerable distance tend to be symmetrical initially but larger cysts may expand unilaterally variable displacement of cortical bone well defined unilocular radiolucency
27
what epithelium lines dentigerous cysts
thin layer of non keratinised squamous epithelium
28
what epithelium do dentigerous cysts arise from
reduced enamel epithelium
29
normal size of dental follicle
2-3mm
30
follicle vs cyst sizes
>5mm consider cyst and monitor >10mm assume cyst also consider cyst if radiolucency asymmetrical
31
eruption cyst
variation of dentigerous cyst associated with erupting tooth contained within soft tissue rather than bone - bluish translucent soft swelling most commonly incisors and almost exclusively seen in children often requires no treatment
32
histology of eruption cyst
2 layers of epithelium -1 is gingiva, 1 is cyst epithelial lining space between is connective tissue
33
epidemiology of OKC - age - gender - location
10s-30s M>F mandible>maxila , posterior >anterior
34
radiographic presentation of OKCs
often scalloped margins 25% multilocular often cause displacement of adjacent teeth root resorption is uncommon characteristic antero-posterior expansion> buccal lingual - can progress significantly before being noticed
35
why do OKCs have a high recurrence rate
thin linining daughter cysts multiloclular
36
pre op diagnostic test for OKC
cystic aspirate OKC has characteristic low soluble protein content (<4g/decilitre)
37
what epithelium are OKCs lined with
stratified parakeratinised squamous epithelium
38
characteristic appearance of OKC basal cells
palasading appearance - nuclei all the same shape, size and at the same level (soldiers)
39
why does OKC epithelium often break away during removal
weak attachment to underlying connective tissue no rete pegs
40
what epithelium do OKCs originate from
rests of serres
41
3 characteristic histological signs of OKCs
palasading daughter cysts parakeratinisation
42
basal cell naevus syndrome
inherited syndrome that sees multiple basal cell carcinomas also multiple OKCs
43
lateral periodontal cyst
rare associated with lateral surface of vital tooth root
44
gingival cysts
derived from rests of serres adults: <1cm bluish/pink sessile swelling infants: bohns nodules, small yellow/cream nodules on edentulous alveolar mucosa
45
nasopalatine duct cyst
developmental non odontogenic cyst arises from nasopalatine duct epithelial remnants
46
epidemiology of nasopalatine duct cysts - gender - age
- M>F - 30s and 40s
47
symptoms of nasopalatine duct cyst
usually asymptomatic patient may report salty discharge larger cysts may displace teeth or cause palatal swelling
48
radiographic presentation of nasopalatine duct cyst
unilocular, well defined radiolucency with corticated margins always involves midline but may not be symmetrical may appear heart shaped due to superimposition of nasal spine
49
radiographs for nasopalatine duct cyst
PA and standard maxillary occlusal
50
histology of nasopalatine duct cyst
non keratinised squamous epithelium lining with modified respiratory neurovascular bundles found within capsule
51
cyst vs incisive fossa sizes
in absence of other clinical issues <6mm assume fossa 6-10mm consider cyst and monitor >10mm suspect cyst
52
solitary bone cyst
non odontogenic cyst with no epithelial lining
53
epidemiology of solitary bone cyst - age - gender - location
- teens - M>F - mandible >maxilla
54
radiographical findings of solitary bone cyst
pre molar/ molar region of mandible variable definition and cortication may project up between roots of adjacent teeth
55
stafne cavity
NOT a cyst usually below IAC indentation on lingual aspect of mandible
56
aspiration biopsy
done using a wide bore needle and 5-10ml syringe can retrieve air, blood, pus and cyst fluid
57
incisional biopsy
done to obtain a sample of histopathological analysis usually done under LA may be combined wtih marsupialisation
58
process of incisional biopsy
select point where lesion appears superficial raise mucoperiosteal flap remove bone as required using round bur incise and remove a section of lining
59
advantages of enucleation
- whole lining can be examined - primary closure - little aftercare
60
disadvantages of enucleation
- risk of mandibular fracture if very large cyst - patient may wish to preserve associated tooth - old/age ill health - damage to adjacent structures - incomplete removal of lining may lead to recurrence
61
indications for masupialisation
enucleation would damage adjacent structures difficult to access to area elederly or immunocompromised not able to withstand enucleation surgery may allow eruption of associated teeth can be combined with enucleation at later date enucleation risks mandibular fracture
62
advantages of marsupialisation
easy to perform may spare vital structures
63
how is marsupialisation window kept open
obturator
64
disadvantages of marsupialisation
opening may close and cyst may reform complete lining not available for histology analysis difficult to keep clean lots of aftercare
65
treatment of nasopalatine duct cyst
enucleation
66
process of enucleation
1. raise mucoperiosteal flap 2. thin bone covering cyst is removed 3. cyst lining separated from bony wall using curettes or periosteal elevators 4. lining sent for histopathological analysis 5. after irrigating with saline, flap sutured back in place
67
process of marsupialisation
1. extract tooth or raise flap to expose cyst 2. aspirate cyst contents then irrigate 3. opening initially maintained with surgical pack then at a later date an obturator 4. patient must irrigate cavity twice daily with saline

BDS4 SCR (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions