18 - Carious Lesions INCOMPLETE

Question 1

what are the two classes of extensive carious lesions

Answer 1

D2 - Moderately deep lesions
D3 - deep carious lesions

Question 2

what is penetration of caries into dentin that is easily demonstrated and may involved up to 1/2 thickness between DEJ and pulp

Answer 2

D2 moderately deep lesions

Question 3

what are lesions that extend beyong 1/2 the distance between DEJ and the pulp

Answer 3

D3 deep carious lesions

Question 4

what usualy encroaches upon the pulp, or less than 1 mm of dentin remains between prep and pulp

Answer 4

D3 deep carious lesions

Question 5

A

Answer 5

D3

Question 6

B

Answer 6

D2

Question 7

C

Answer 7

D3

Question 8

what type of dentin: initial dentin formed, thin layer just below enamel

Answer 8

mantle

Question 9

what type of dentin formed as tooth erupts

Answer 9

primary dentin (circumpulpal)

Question 10

what type of dentin is formed thru functional life of tooth in response to mild pulpal irritation

Answer 10

secondary dentin

Question 11

Sound, normal dentin that forms normally on all internal aspects of the pulp cavity throughout the life of the tooth.

Answer 11

Secondary Dentin

Question 12

Forms in response to stimuli such as caries, attrition, and
operative procedures. AKA reparative or reactive dentin. Less
mineralized and contains irregular tubules. Localized deposit on the wall
of the pulp space adjacent to where the tooth was irritated.

Answer 12

Tertiary Dentin

Question 13

In response aging or mild irritation like slowly advancing
caries. Walls off the lesion by blocking (sealing) dentinal tubules. Usually
harder and darker than normal dentin.

Answer 13

Sclerotic Dentin

Question 14

what is soft dentin also called

Answer 14

infected dentin or outer carious dentin

Question 15

what has bacterial contamination, low mineral content, irreversibly denatured collagen, and lacks structure and can easaily be excavated with hand or rptary instruments

Answer 15

soft dentin

Question 16

what is firm dentin also called

Answer 16

affected or inner carious dentin

Question 17

what has demineralization of intertubular dentin, softer than normal dentin, collagen cross linking remains intact (serves as template for remin), resostant to hand excavation, only removed by exerting pressure (sometimes called leathery at the transiion soft and firm

Answer 17

firm dentin

Question 18

___ dentin needs to be remove all of it because collagen will not come back
___ dentin you can leave

Answer 18

infected; affected

Question 19

what zone:

Deepest zone (assuming lesion hasn’t reached the pulp!)
May include tertiary, sclerotic and normal (sound) dentin

Answer 19

hard dentin

Question 20

Answer 20

Question 21

continue slide 11