disease of bone + maxillary sinus

Question 1

what is stafne’s cavity?

Answer 1

rounded well defined radiolucency with corticated margins, at angle of mandible below IAN
depression into cortex formed around submandibular salivary gland during development

Question 2

mutation causing fibrous dyslasia

Answer 2

GNAS1

Question 3

what is fibrous dysplasia?

Answer 3

normal bone replaced with fibrous tissue, which in turn undergoes gradual calcification

Question 4

2 types of fibrous dysplasia

Answer 4

monostotic - single bone

polyostotic - more than one bone

Question 5

facial symptoms of fibrous dysplasia

Answer 5

painless bone expansion
neurological signs
eruption + malocclusion effected

Question 6

radiological appearance of fibrous dysplasia

Answer 6

initially radiolucent –> radioopque as calcify
ground glass appearance of bone - trabecular small + fine
or can be coarser = orange peel
loss of lamina dura around tooth

Question 7

possible medication for fibrous dysplasia

Answer 7

bisphosphonates

Question 8

3 fibrous-osseous lesions

Answer 8

fibrous dysplasia
cemento-ossfiying fibroma
cemento-osseous dysplasia

Question 9

clinical presentation of fibrous-osseous lesion

Answer 9

slow growing swelling
asymmetry
painless

Question 10

difference radiographically of fibrous dysplasia + ossifying fibroma

Answer 10

COF well circumscribed

Question 11

ossifying fibroma effect on teeth

Answer 11

displaced or resorbed

Question 12

is fibrous dysplasia uni or bi lateral

Answer 12

unilateral

Question 13

is pages disease uni or bi lateral

Answer 13

bilateral

Question 14

pagets disease puts patients at risk of what cancer

Answer 14

osteosarcoma

Question 15

why may extraction be difficult in pagets patinet

Answer 15

hypercementosis/ankylosis
may be on bisphosphonates
increased bleeding, osteomyelitis + slow healing

Question 16

blood test to diagnose pagets

Answer 16

raised serum alkaline phosphatase

Question 17

fibre-osseous lesion that may look like PAP

Answer 17

cemento-osseous dysplasia - teeth without caries + vital, won’t resorb roots
overtime radioopaque centre

Question 18

identifiable characteristic of giant cell granuloma

Answer 18

presence of osteoclasts

Question 19

clinical + radiographic features of giant cell granuloma

Answer 19

anterior part of jaw most common
painless swelling, displacement of teeth
round/ovoid radiolucency, well defined, noncorticated
bony expansion

Question 20

how to differentiate giant cell granuloma from hyperparathyroidism

Answer 20

serum calcium raised in hyperparathyroidism

Question 21

management of giant cell granuloma

Answer 21

surgical curettage

injection of slow release steroids

Question 22

characteristic of hyperparathyroidism which involves tooth

Answer 22

loss of lamina dura

Question 23

how will osteoporosis affect jaw

Answer 23

greater radiolucency of bone + cortical thinning

Question 24

how does sinusitis appear on radiograph

Answer 24

radio-opaque

Question 25

radiograph to be taken if tooth displaced into sinus

Answer 25

PA | then oblique occlusal or DPT or CBCT

Question 26

how to remove root from sinus

Answer 26

if beneath astral lining = buccal mucoperiosteal flap + bone removal if in air space - caldwell-luc approach

Question 27

what is prescribed after OAC made

Answer 27

amoxicillin and 0.5% ephedrine nasal drops

Question 28

complication of tooth extraction in osteopetrosis pt

Answer 28

osteomyelitis risk

Question 29

how does osteopetrosis effect maxillary sinus

Answer 29

sinus may be obliterated on radiograph