Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Dental Materials Science BDS2 > Properties of a Lining Material > Flashcards

Properties of a Lining Material Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

what are the disadvantages of restorative materials?

A

may not make intimate contact with the tooth surface, heat released during setting/curing, release of chemicals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is the solution for the disadvantages of restorative materials?

A

a lining material

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what does a lining material do?

A

prevents gaps and act as a protective barrier

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is a cavity base?

A

thick mix placed in bulk, dentine replacement used to minimise the bulk of the material or block out undercuts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

when are cavity bases used?

A

metal restorations

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is a cavity lining?

A

thin coating over exposed dentine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what is the purpose of a liner?

A

pulpal protection from chemical stimuli from unreacted chemicals in filler material, thermal stimuli from setting reactions/heat conduction, bacteria and endotoxins, therapeutic to calm down inflammation, palliative for reversible pulpitis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what are the properties of lining materials?

A

ease of use, thermal properties, mechanical properties, radiopaque, marginal seal, solubility, cariostatic, biocompatible, compatible with restorative materials

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what should the length of working time be for cavity liners?

A

long to allow easy placement

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what should the setting time be for cavity liners?

A

short and ideally command set

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what should the thermal conductivity be?

A

low

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what should the thermal expansion coefficient be?

A

similar to dentine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what should the thermal diffusivity be?

A

similar to dentine or lower

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is thermal conductivity?

A

how well heat energy is transferred through a material

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what is thermal expansion coefficient?

A

change in length per unit length for a temperature rise of 1 degree celsius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is the compressive strength of cavity liners?

A

high to allow placement of filling without breaking it

17
Q

what is the advantage of radiopaque cavity liners?

A

makes it easier to see if there is any leakage or secondary caries

18
Q

what type of bond is formed between the lining material and dentine?

A

chemical bond which should be permanent and impenetrable

19
Q

what is the cariostatic properties of cavity lining materials?

A

fluoride releasing and antibacterial

20
Q

comment on the biocompatibility of the cavity liner

A

non-toxic, not damaging to the pulp, low thermal conductivity

21
Q

what are the types of cavity lining and base materials?

A

setting calcium hydroxide, zinc oxide based cements, glass ionomer and RMGI, palliative cements

Dental Materials Science BDS2 (15 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions