Cysts and Odontogenic Tumors

Question 1

Epithelial lined pathologic cavity

Answer 1

Cyst

Question 2

You must have ______ in order to categorize it as a cyst

Answer 2

Epithelial lining

Question 3

• Most common non-
odontogenic cyst of oral 
cavity
• A developmental cyst that 
arises from epithelial 
remnants of nasopalatine
duct
• Vital teeth
• Adults - 4th to 6th Decades

Answer 3

Nasopalatine duct cyst

Incisive canal cyst

Question 4

___ only occurs in the maxilla in the midline between #8 and #9

Answer 4

Incisive canal cyst

Question 5

• Radiolucency - 0.6 cm is the upper limit of normal for the incisive foramen
• Swelling of anterior palate
• Drainage and pain, if inflamed

Answer 5

Nasopalatine duct cyst

Question 6

• Well-circumscribed palatal lucency
• Epithelium entrapped during fusion of palatal shelves
• Stratified squamous or pseudostratified columnar
• May be difficult to distinguish from Nasopalatine Duct Cyst

Answer 6

Median palatine cyst

Question 7

• Apex of non-vital tooth
• Arises from rests of Malassez
-INflammatory

Answer 7

Periapical Cyst (Radicular Cyst)

Question 8

_____ is a periapical cyst that has been left behind

Answer 8

Residual cyst

Question 9

• Paradental cyst
• Buccal bifurcation of vital mandibular molar teeth with
cervical enamel projection
-Well defined RL

Answer 9

Buccal bifurcation cyst

Question 10

• Most common type of developmental odontogenic cyst
• Arises from dental follicle - attached to the cervix, enclosing
the crown of an unerupted tooth
• Enlarged follicular space > 4 mm

Answer 10

Dentigerous cyst

Question 11

You must have a _____ in order for it to be a dentigerous cyst

Answer 11

IMpacted tooth

Question 12

What are the 3 cells seen in histology of PA cyst?

Answer 12

Plasma cells
Macrophages
Lymphocytes

Question 13

____ is a soft tissue variant of dentigerous cyst of an erupting tooth

Answer 13

Eruption cyst/hematoma

Question 14

The _______position is located at the junction of
maxilla with premaxilla, between maxillary lateral incisor
and canine

Answer 14

globulomaxillary

Question 15

• A developmental cyst that arises from dental lamina rests 
(rests of Serres)
• Vital teeth of adult males (3:1)
• Mandibular premolar area
• Maxillary incisor-canine area
* Vital tooth

Answer 15

Lateral periodontal cyst

Question 16

Are PA cyst, granuloma, and abscess in vital or non vital teeth?

Answer 16

Non vital

Question 17

Is the lateral periodontal cyst associated with vital or non vital teeth?

Answer 17

Vital teeth

Question 18

• Polycystic variant of the lateral periodontal cyst
• A developmental odontogenic cyst that presents as a
multilocular lucency associated with the vital mandibular
premolars of adults
- Multilocular version of lateral perio cyst

Answer 18

Botryoid Odontogenic Cyst

Question 19

• Soft tissue counterpart of the lateral periodontal cyst
• A developmental cyst that arises from dental lamina rests
(rests of Serres)
• Vital teeth of adult males (3:1)
• Mandibular premolar area and maxillary incisor-canine area

Answer 19

Gingival cyst

Question 20

Do eruption cysts and gingival cysts have a radiographic presentation?

Answer 20

Nope

Question 21

What areas do the gingival cysts and lateral perio cysts most likely to occur? Male or female?

Answer 21

Mand PM and Max incisors/canine; Male

Question 22

_____ are keratin filled bumps that appear yellow on alveolar mucosa
- will rupture on their own

Answer 22

Dental lamina cyst of newborn

Question 23

• Radiographic term for a cyst that develops in place of a tooth
-In place of where you would expect to see a tooth
• Likely to be an Odontogenic Keratocyst (OKC)

Answer 23

Primordial Cyst

Question 24

The primordial cyst is likely an _____

Answer 24

OKC

Question 25

Where are dental lamina cysts found in mouth?

Answer 25

Alveolar mucosa

Question 26

Where are Epstein’s pearls located in the mouth?

Answer 26

Midline of palate

Question 27

Where are Bohn’s nodules located in the mouth?

Answer 27

Around minor salivary glands