inflammatory condition

Question 1

rarefying osteoitis

Answer 1

1) destruction of bone at root apex
2) periapical radiolucency
3) may see a perforation somewhere else as well

Question 2

sclerosing osteitis

Answer 2

1) radiopacity of bone
2) bone deposition around the tooth root
3) see rarefying around it

Question 3

causes of PA inflammation include

Answer 3

1) trauma or caries
- extend to the pulp and lead to necrosis
2) surrounding bone may be inflamed
- rarefying osteitis
3) sclerosing osteitis to wall off inflammatory lesion
4 )if it extends to periosteon
- there can be periosteal new bone formation
5) if no blood supply
- sequestrations
- osteomyelitis

Question 4

early radiographic changes

Answer 4

1 )changes may be subtle if present in early lesions
2) 12-66% of the matrix
3) minimal PDL space widening with loss of apical lamina dura
4) later on, rarefying osteotis and sclerosing
5) generally poorly defined borders
- wide zone of transition
- may see corticated periphery though (may not always be a cyst)

Question 5

continued changes

Answer 5

1) sclerosing osteitis
- most of lesion is bone forming
2) variable in how radiolucent it is
3) more chronic inflammation
4) can extend to adjacent teeth or bone border

Question 6

teeth can response

Answer 6

1) extenal resorption adjacent to inflammation
2) removal of outer surface
- apex and cervical area
- may extend to the pulp area
3) widened apical PDL spaces
4) very common in many cases

Question 7

hypercementosis

Answer 7

1) depositon of cementum all over root
2) lamina dura is nice and intact around it
3) typically on multiple teeth