odontogenic tumors Flashcards Preview

oral path 2 > odontogenic tumors > Flashcards

Flashcards in odontogenic tumors Deck (51):
1

what is in the bell stage of tooth development

dental lamina, enamel organ, dental papilla, dental follicle

2

cells in enamel organ

ameloblasts, enamel

3

cells in dental papilla

odontoblasts, dentin, pulp

4

cells in dental follicle

cementoblasts, cementum, pdl, alv bone

5

where can odontogenic tissues come from

odontogenic epithelium, ectomesenchyme, or mesenchyme and ectomesenchyme

6

where are odontogenic tumors located

in areas where teeth can form, most are central

7

t/f most odontogenic tumors are benign

true, grow from months to years, grow slowly

8

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

true, but some are radiolucent, radiopaque, or mixed

9

radiolucent odonto tumors

ameloblastoma, ameloblastic fibroma, cental odotogenic fibroma, odontogenic myxoma

10

ameloblastomas are located where

molar/ramus area of mand

11

ameloblastoma

benign tumor of ameloblasts that does NOT produce enamel

12

t/f. ameloblastomas are slowly growing and locally aggressive

true

13

classic signs for ameloblastoma

soap bubble (multilocular, round septations)
significant expansion

14

microscopically, ameloblastomas resemble

the enamel organ, you still see stellate reticulum and ameloblasts

15

tx of ameloblastoma

removal, including 1-2cm of surrounding bone
can recur, it infiltrates the bone

16

peripheral ameloblastoma tx

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

17

ameloblastic fibroma consists of

odontogenic epithelium and ectomesenchyme (CT)

18

tx of ameloblastic fibroma

enucleation/curettage with good prognosis

19

what age does ameloblastic fibroma effect

under 20 (1st/2nd decade)

20

where is an ameloblastic fibrma usually

post mandible

21

odontogenic fibroma consists of

ectomesenchyme (dental follicle)

22

radiographic appearance of odontogenic fibroma

radiolucent, corticated, well defined

23

tx of odontogenic fibroma

conservative surgical removal - enucleation/curettage

24

odontogenic myxoma has what type of radiographic appearance

honeycomb/tennis racket appearance

25

t/f odontogenic myxoma infiltrates into bone

true, has a goopy texture so it seeps into bone

26

tx of odontogenic myxoma

remove including surrounding bone

27

key difference between ameloblastoma and myxoma

myxomas have straight septations and ameloblastomas have more rounded

28

multilocular odontogenic cysts/tumors

OKC
ameloblastomas
myxomas

29

which tumor is ALWAYS mixed rl-ro

ameloblastic fibro-odontoma

30

2/3 tumor

adenomatoid odontogenic tumor

31

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

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

32

tx of adenomatoid odontogenic tumor

easily excised, no recurrence

33

t/f calcifying epithelial odontogenic tumor may produce mineralizations

true

34

ameloblastic fibro-odontoma is always under what age

20

35

radiopaque lesions

odontomas and cementoblastomas

36

t/f odontomas are tumors

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

37

neoplasm

new growth of abnormal tissue

38

benign

localized, persistent and progressive

39

malignant

cancer, invades and metastasizes

40

teratoma

neoplasm that arises from stem cells

41

hamartoma

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

42

choristoma

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

43

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

choristoma and hamartoma

44

key radiographic finding in odontomas

radiopaque area surrounded by radiolucent line surrounded by radiopaque line

45

2 types of odontomas

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

46

where are complex odontomas usually found

post mand

47

odontoma spectrum of development

ameloblastic fibroma -> ameloblastic fibro-odontoma -> odontoma

48

tx of odontomas

remove

49

cementoblastoma

benign neoplasm of cementoblasts
usually pain and swelling

50

radiographic appearance of cementoblastoma

fused to tooth root and causes partial root resorption

51

tx of cementoblastoma

remove lesion and tooth
OR remove lesion and endo