Midterm Review

Question 1

Describe the radiographic findings of a dentigerous cyst:

Answer 1

1. consistency widened follicular space of greater 3 mm
2. well-delineated radiolucency with corticated borders

Question 2

With a dentigerous cyst, the cyst lining arises from remnants of the:

Answer 2

dental follicle

Question 3

Accounts for 20% of jaw cysts:

Answer 3

dentigerous cyst

Question 4

Describe the age/sex/site most common for dentigerous cyst:

Answer 4

1. highest incidence in 20s & 30s
2. most common in mandibular 3rd molars and maxillary canines and can affect any impacted tooh

Question 5

Describe the possible treatments for dentigerous cysts:

Answer 5

1. enucleate
2. degree of surgery is dependent on size of tumor
3. potential for degeneration of the cyst lining to an ameloblastoma or squamous cell carcinoma

Question 6

What are potential risks for a dentigerous cyst?

Answer 6

ameloblastoma or squamous cell carcinoma

Question 7

Answer 7

dentigerous cyst

Question 8

Answer 8

dentigerous cyst

Question 9

Answer 9

dentigerous cyst

Question 10

Answer 10

expansion of dentigerous cyst

Question 11

Presents as a soft fluid filled swelling of crestal mucosa in an area of an eruption tooth:

Answer 11

eruption cyst

Question 12

An eruption cyst often has ____ coloration due to ___

Answer 12

blueish; trauma creating blood in cystic fluid

Question 13

Radiographically for an eruption cyst you may see:

Answer 13

lack of crystal alveolar bone because of position of erupting crown and cyst near crest

Question 14

Age/sex/site for an eruption cyst:

Answer 14

• less than 10 years of age in the mixed dentition stage
• most common in the mandibular molar region

Question 15

Management for an eruption cyst include:

Answer 15

1. often rupture sponatenously
2. some may require simple exicsion

Question 16

Answer 16

eruption cyst

Question 17

Answer 17

eruption cyst

Question 18

a mixed odontogenic tumor:

Answer 18

amelobalstic fibroma

Question 19

radiographically- an ameloblastic fibroma may be seen as:

Answer 19

pericoronal radiolucency associated with a developing tooth:

Question 20

age/sex/site most common for an ameloblastic fibroma:

Answer 20

1. 70% of cases are less than 20 years old
2. mean age 14-15.5 years
3. highest incidence in mandibular molar to premolar region

Question 21

Describe the management for an ameloblastic fibroma:

Answer 21

enucleation with 20% recurrence

Question 22

a mixed odontogenic tumor, similar to amelobastic fibroma but has mineralized stroma:

Answer 22

ameloblastic fibrodontoma

Question 23

What happens if mineralization is high in an amelobasltic fibroodontoma

Answer 23

radiopaque flecks may be evident radiographically

Question 24

Radiographically how does an ameloblastic fibroodontoma appear?

Answer 24

pericoronal radiolucency associated with a developing tooth with radiopaque flecks in the lumen

Question 25

Age/sex/site for an ameloblastic fibroodontoma:

Answer 25

- mean age 15 years - posterior mandibule

Question 26

Treamtnent for an amelobalstic fibroodontoma:

Answer 26

must be differentiated from odontoameloblastoma as the latter is more aggressive

Question 27

Answer 27

ameloblastic fibroma

Question 28

Answer 28

ameloblastic fibroma

Question 29

Answer 29

ameloblastic fibroma

Question 30

Answer 30

ameloblastic fibroma

Question 31

Answer 31

ameloblastic fibroodontoma

Question 32

Answer 32

ameloblastic fibroodontoma

Question 33

Answer 33

ameloblastic fibroodontoma

Question 34

Rare tumor that must be differentiated from ameloblastic fibroodontoma as it is more aggressive and requires surgical resection:

Answer 34

odontoameloblastoma

Question 35

Describe the radiographic appearance of odontoameloblastoma:

Answer 35

1. expansive with destruction of adjacent bone 2. rudimentary tooth-like structures similar to complex odontoma

Question 36

Age/sex/location for odontoameloblastoma:

Answer 36

teens & children mainly in mandible

Question 37

3-7% of odontogenic tumors:

Answer 37

adenomatoid odontogenic tumor

Question 38

histologically a cross between a dentigerous cyst and an ameloblastoma

Answer 38

adenomatoid odontogenic tumor

Question 39

odontogenic epithelium is arranged in duct-like glandular array:

Answer 39

adenomoatoid odontogenic tumor

Question 40

Consistently widened follicular space of greater than 3mm if associated iwht crown of impacted teeth (75percent of cases are pericoronal)

Answer 40

adenomatoid odontogenic tumor

Question 41

Radiographically how do we see an adenomatoid odontogenic tumor?

Answer 41

well delineated radiolucency with corticated border (usually greater than 3 cm)

Question 42

Age/sex/location most common for adenomatoid odontogenic tumor

Answer 42

Females to males 2:1 adolescents (10-19 years) anterior jaws more common in maxilla

Question 43

Treament of adenomatoid odontogenic tumor:

Answer 43

enucleation and recurrence

Question 44

Answer 44

adenomatoid odontogenic tumor

Question 45

Answer 45

adenomatoid odontogenic tumor

Question 46

Answer 46

adenomatoid odontogenic tumor

Question 47

Answer 47

adenomatoid odontogenic tumor

Question 48

Answer 48

adenomatoid odontogenic tumor

Question 49

Approximately 50% of pindborg tumors occur with:

Answer 49

impacted teeth

Question 50

radiographically describe a pindborg tumor may appear:

Answer 50

1. radiopaque flecks due to calcified amyloid 2. breakdown product of neoplastic epithelial cells (these mineralizations are called Leisengangs rings)

Question 51

Age/sex/site most common for pindborg tumors:

Answer 51

mean age of 40 years mandible: maxilla 2:1 poster mandible

Question 52

Pindborg tumor treatments:

Answer 52

large lesion require en bloc resections

Question 53

Pindborg tumor =

Answer 53

calcifying epithelial odontogenic tumor

Question 54

Answer 54

pindborg tumor

Question 55

Answer 55

pindborg tumor (calcifying epithelial odontogenic tumor)

Question 56

Answer 56

pindborg tumor

Question 57

Extremely variable presentation with approximately 2-16% behaving as neoplasms:

Answer 57

gorlin cyst

Question 58

Gorlin cyst=

Answer 58

calcifying odontogenic cyst

Question 59

Gorlin cyst size:

Answer 59

2cm -12 cm

Question 60

Gorlins cysts are commonly seen in ____ population and ___ area:

Answer 60

- occur at any age but commonly diagnosed in teens & young adults - no sex favors - 65% in anterior maxilla

Question 61

Treatment for gorlins cyst:

Answer 61

simple enucleation with minimal recurrence

Question 62

Answer 62

Gorlins cyst