Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Oral Pathology > Class: Exam 2 Odontogenic Cysts > Flashcards

Class: Exam 2 Odontogenic Cysts Flashcards

1
Q

What is Odontogenesis?

A

Odontogenesis starts with surface ectoderm (epithelium) growing into jaw (dental lamina) and producing the tooth germ, a portion of which is the enamel organ

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

Define Odontogenic Cysts

A

Pathologic cavity lined by odontogenic epithelium and filled with fluid or semisolid material

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

Etiology of odontogenic cysts

A
  1. inflammation

2. Unknown, these are called developmental cysts but are not inflammatory

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

Which cysts are inflammatory?

A

Radicular cyst and buccal bifurcation cysts are inflammatory

All the rest are developmental

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

Define Primordial Cysts

A

Cyst arising from degeneration of enamel organ prior to tooth formation aborts odontogenesis resulting in radiolucency in place of a missing tooth
- Mandibular 3rd molars

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

Define Dentigerous Cyst (Follicular Cyst)

A

Cyst resulting from separation of the follicle from around the crown of developing tooth

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

Where and within what population is Dentigerous cysts most commonly found?

A

Any age
Mandibular 3rd molars
Maxillary cuspids

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

Clinical findings of Dentigerous cysts

A

Asymptomatic

Usually no expansion

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

Radiographic findings of Dentigerous Cyst

A

Well circumscribed pericoronal radiolucency

From CEJ around crown

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

Histological features of Dentigerous Cyst

A

Stratified squamous epithelium without keratinization (this was originally the ameloblasts which following odontogenesis becomes reduced enamel epithelium)

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

Treatment of Dentigerous Cyst

A

Surgical removal of tooth and cyst if 3M

For Cuspid, may be able to decompress and pull Cuspid in orthodontically

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

Variants of Dentigerous Cyst

A
  1. Eruption Cyst - A dentigerous cyst that gets pushed into oral cavity by erupting tooth, may treat with decompression so tooth can erupt
  2. Lateral - > Md 3M - Laterally placed
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Neoplastic potential of Dentigerous cyst

A

Exceedingly rare

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

What three neoplastic lesions may develop from the lining of a dentigerous cyst?

A

Ameloblastoma
Squamous cell carcinoma
Mucoepidermoid Carcinoma

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

Name the Periodontal Cysts

A

Apical Periodontal Cyst (Radicular cyst)

Lateral Periodontal Cyst

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

Describe the Apical Periodontal Cyst

A

Most common of all odontogenic cysts
Inflammatory origin secondary to devitalized pulp

  1. Lateral radicular cyst
  2. Residual cyst
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Describe the Lateral Periodontal cyst

A

Arises from cystic degeneration of rests of Malassez in PDL

Teeth are vital

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

Where are Lateral Periodontal cysts most comon?

A

Mandibular Cuspid and Bicuspids

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

Radiographic findings of Lateral Periodontal cyts

A

Small well circumscribed radiolucency along lateral root surface of vital tooth

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

Histological findings of Lateral Periodontal cysts

A

Nonkeratinizing stratified Squamous epithelial lining

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

Treatment of Lateral Periodontal cysts

A

Excision

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

Variant of Lateral Periodontal cysts

A

Botryoid odontogenic cyst

- polycystic, multilocular, may recur after removal

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

Describe the Newborn (dental lamina cyst)

A

Soft tissue cysts on gingiva or alveolar ridge from degenerating dental lamina
Very common

24
Q

When are newborn (Dental lamina cysts) found?

A

Congenital or early life

25
Q

Clinical features of newborn (Dental lamina cysts)

A

Small yellowish elevations

26
Q

Treatment of newborn (dental lamina cysts)

A

No treatment

Will self-marsupialize and heal

27
Q

Define Adult Gingival cysts

A

Cysts of attached gingiva from degeneration of rests or glands of Serres (Dental lamina)
Soft compressible swellings

28
Q

Where are Adult gingival cysts commonly found?

A

Mandibular cuspid and bicuspids

29
Q

Adult gingival cysts are clinically similar to what?

A

Clinically similar to mucocele but mucoceles don’t occur on gingiva

30
Q

Treatment of adult gingival cysts

A

Excision

31
Q

Define Odontogenic Keratocyst

A

Developmental cyst from dental lamina

32
Q

Odontogenic Keratocysts are classified how?

A

90% parakeratinized

10% orthokeratinized (orthokeratinized odontogenic cyst)

33
Q

Where and within what age group are Parakeratinized keratocysts found?

A

All ages but more common 2-3 & 6-7 decades

Mandibular:Maxillary = 2:1
Increase –> Posterior Mandible

34
Q

Clinical features of Parakeratinized keratocysts

A

1/4 exapnsion +- drainage and pain

Clinically aggressive

35
Q

Radiographic findings of Parakeratinized keratocysts

A

Unilocular or multilocular radiolucency

Commonly mimics other types of odontogenic cysts

36
Q

Histologic findings of Parakeratinzied keratocysts

A

Parakeratotic stratified squamous epithelial lining with well developed palisaded and hyperchromatic basal cells
Often daughter or microcysts in wall

37
Q

Treatment/Prognosis of Parakeratinized keratocysts

A

Conservative surgical removal to resection to decompression

*about 1/3 recur

38
Q

What is Basal cell nevus-bifid rib syndrome

A

About 5% of patients with keratocyst have
Almost all multiple OKC’s
- Autosomal dominant (mutation of a tumor suppressor gene 9q22)

39
Q

Clinical features of Basal cell nevus-bifid rib syndrome

A

basal cell carcinomas (not nevi; not limited to sun-exposed areas or elderly)

  • calcification of falx cerebri
  • bone anomalies (bifid ribs)
  • OKCs usually multiple
  • Pits in palms and soles
40
Q

Keratocysts known for what?

A

Clinical aggressiveness
Recurrence after removal
Association with basal cell nevus-bifid rib syndrome

41
Q

Describe orthokeratinized odontogenic cysts

A

Smaller
Less aggressive
Minimal recurrence
Not associated with syndrome

42
Q

Where and what age are Calcifying odontogenic cysts (Gorlin Cyst) most common?

A

Any age
> Mandible
Maybe associated with unerupted teeth or odontomas

43
Q

Clinical features of Calcifying odontogenic cysts (Gorlin Cyst)

A

Asymptomatic
Rarely expansion
Occur extraosseously

44
Q

Radiographic findings of Calcifying odontogenic cysts (Gorlin Cyst)

A

Radiolucent to mixed radiolucent/opaque

45
Q

Histologic findings of Calcifying odontogenic cysts (Gorlin Cyst)

A

Fully or partially cystic

cystic epithelium contains ghost cells (prematurely keratinized) which tends to calcify

46
Q

Treatment of Calcifying odontogenic cysts (Gorlin Cyst)

A

Conservative surgical removal - low recurrence

47
Q

Where are Glandular Odontogenic cysts most common?

A

Mandible, May be large

48
Q

Radiographic findings of Glandular Odontogenic cysts

A

Unilocular to multilocular radiolucency

49
Q

Histologic findings of Glandular Odontogenic cysts

A

Cyst showing glandular differentiation (mucus cells, columnar epithelium with cilia, lumina)

50
Q

Treatment of Glandular Odontogenic cysts

A

Surgical excision

30-50% recurrence

51
Q

Define Buccal Bifurcation cyst (Paradental cyst)

A

Inflammatory cyst occuring on buccal of erupting tooth

52
Q

Where and within what age group are Buccal bifurcation cysts most common?

A

Children
Mandibular first molar (often enamel extension into furcation)
Buccal swelling

53
Q

Radiographic findings of Buccal bifurcation cysts

A

Unilocular lucency involving furcation of roots

54
Q

Histologic findings of Buccal bifurcation cysts

A

Inflamed cyst lined by stratified squamous epithelium

55
Q

Treatment of Buccal bifurcation cysts

A

Enucleation of cyst. If you recognize this clinically which you should, you do not have to extract the tooth

Oral Pathology (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions