odontogenic tumors

Question 1

what is in the bell stage of tooth development

Answer 1

dental lamina, enamel organ, dental papilla, dental follicle

Question 2

cells in enamel organ

Answer 2

ameloblasts, enamel

Question 3

cells in dental papilla

Answer 3

odontoblasts, dentin, pulp

Question 4

cells in dental follicle

Answer 4

cementoblasts, cementum, pdl, alv bone

Question 5

where can odontogenic tissues come from

Answer 5

odontogenic epithelium, ectomesenchyme, or mesenchyme and ectomesenchyme

Question 6

where are odontogenic tumors located

Answer 6

in areas where teeth can form, most are central

Question 7

t/f most odontogenic tumors are benign

Answer 7

true, grow from months to years, grow slowly

Question 8

t/f most odonotgenic tumors are well circumscribed with a corticated border

Answer 8

true, but some are radiolucent, radiopaque, or mixed

Question 9

radiolucent odonto tumors

Answer 9

ameloblastoma, ameloblastic fibroma, cental odotogenic fibroma, odontogenic myxoma

Question 10

ameloblastomas are located where

Answer 10

molar/ramus area of mand

Question 11

ameloblastoma

Answer 11

benign tumor of ameloblasts that does NOT produce enamel

Question 12

t/f. ameloblastomas are slowly growing and locally aggressive

Answer 12

true

Question 13

classic signs for ameloblastoma

Answer 13

soap bubble (multilocular, round septations)
significant expansion

Question 14

microscopically, ameloblastomas resemble

Answer 14

the enamel organ, you still see stellate reticulum and ameloblasts

Question 15

tx of ameloblastoma

Answer 15

removal, including 1-2cm of surrounding bone

can recur, it infiltrates the bone

Question 16

peripheral ameloblastoma tx

Answer 16

cut it off, its in the soft tissue, so you can get around it

Question 17

ameloblastic fibroma consists of

Answer 17

odontogenic epithelium and ectomesenchyme (CT)

Question 18

tx of ameloblastic fibroma

Answer 18

enucleation/curettage with good prognosis

Question 19

what age does ameloblastic fibroma effect

Answer 19

under 20 (1st/2nd decade)

Question 20

where is an ameloblastic fibrma usually

Answer 20

post mandible

Question 21

odontogenic fibroma consists of

Answer 21

ectomesenchyme (dental follicle)

Question 22

radiographic appearance of odontogenic fibroma

Answer 22

radiolucent, corticated, well defined

Question 23

tx of odontogenic fibroma

Answer 23

conservative surgical removal - enucleation/curettage

Question 24

odontogenic myxoma has what type of radiographic appearance

Answer 24

honeycomb/tennis racket appearance

Question 25

t/f odontogenic myxoma infiltrates into bone

Answer 25

true, has a goopy texture so it seeps into bone

Question 26

tx of odontogenic myxoma

Answer 26

remove including surrounding bone

Question 27

key difference between ameloblastoma and myxoma

Answer 27

myxomas have straight septations and ameloblastomas have more rounded

Question 28

multilocular odontogenic cysts/tumors

Answer 28

OKC ameloblastomas myxomas

Question 29

which tumor is ALWAYS mixed rl-ro

Answer 29

ameloblastic fibro-odontoma

Question 30

2/3 tumor

Answer 30

adenomatoid odontogenic tumor

Question 31

what does the 2/3rds mean in an adenomatoid odontogenic tumor

Answer 31

2/3rd of the time associated with females under 20 ant max unerupted tooth

Question 32

tx of adenomatoid odontogenic tumor

Answer 32

easily excised, no recurrence

Question 33

t/f calcifying epithelial odontogenic tumor may produce mineralizations

Answer 33

true

Question 34

ameloblastic fibro-odontoma is always under what age

Answer 34

20

Question 35

radiopaque lesions

Answer 35

odontomas and cementoblastomas

Question 36

t/f odontomas are tumors

Answer 36

false. more of a hamartoma because they STOP GROWING, not persistent and progressive

Question 37

neoplasm

Answer 37

new growth of abnormal tissue

Question 38

benign

Answer 38

localized, persistent and progressive

Question 39

malignant

Answer 39

cancer, invades and metastasizes

Question 40

teratoma

Answer 40

neoplasm that arises from stem cells

Question 41

hamartoma

Answer 41

overgrowth of mature cells that normally occur in the affected part, disorganized

Question 42

choristoma

Answer 42

overgrowth of mature cells that occur other than the site which it is normally located (bone on tongue)

Question 43

what two overgrowths of tissue stop growing when normal tissue stops growing

Answer 43

choristoma and hamartoma

Question 44

key radiographic finding in odontomas

Answer 44

radiopaque area surrounded by radiolucent line surrounded by radiopaque line

Question 45

2 types of odontomas

Answer 45

compound (multiple, tooth-like) | complex (does not look like teeth)

Question 46

where are complex odontomas usually found

Answer 46

post mand

Question 47

odontoma spectrum of development

Answer 47

ameloblastic fibroma -> ameloblastic fibro-odontoma -> odontoma

Question 48

tx of odontomas

Answer 48

remove

Question 49

cementoblastoma

Answer 49

benign neoplasm of cementoblasts | usually pain and swelling

Question 50

radiographic appearance of cementoblastoma

Answer 50

fused to tooth root and causes partial root resorption

Question 51

tx of cementoblastoma

Answer 51

remove lesion and tooth | OR remove lesion and endo