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Chapter 4 EFDA hottel bases and liners exam
questions and verified answers
What are the 9 reasons to use bases and liners? - correct -answer-1. caries
2.tramatic occl.
3. effect of cutting bus
4. desiccation
5. condensation pressure
6. chemical irritation
7. temperature changes
8. dimensional changes
9. lack of marginal seal
dissadvantage of glass ionomer - correct -answer-technique sensitive
susceptible to water contamination
needs to be isolated
proper ratios need to be followed
low tensile and shear strength
adherance occurs after 24 hours
, 2
when to use glass ionomer? - correct -answer-1. as a base
2. as a liner
3.cementing agent
4. restorative for class V
5. pit and fissure sealant
mixing glass ionomer - correct -answer--mixed rapidly
-Must be seated within 2 minutes from starting the mix
-Must be seated while surface is glossy
placement of GI - correct -answer-- must be isolated/moisture sens.
-cover all dentin surfaces
when to use GI - correct -answer-- indirect/direct pulp cap
- waiting for definitive diagnosis ( temp )
- not enough time to place a filling
- temp cement for inlay/only
Chapter 4 EFDA hottel bases and liners exam
questions and verified answers
What are the 9 reasons to use bases and liners? - correct -answer-1. caries
2.tramatic occl.
3. effect of cutting bus
4. desiccation
5. condensation pressure
6. chemical irritation
7. temperature changes
8. dimensional changes
9. lack of marginal seal
dissadvantage of glass ionomer - correct -answer-technique sensitive
susceptible to water contamination
needs to be isolated
proper ratios need to be followed
low tensile and shear strength
adherance occurs after 24 hours
, 2
when to use glass ionomer? - correct -answer-1. as a base
2. as a liner
3.cementing agent
4. restorative for class V
5. pit and fissure sealant
mixing glass ionomer - correct -answer--mixed rapidly
-Must be seated within 2 minutes from starting the mix
-Must be seated while surface is glossy
placement of GI - correct -answer-- must be isolated/moisture sens.
-cover all dentin surfaces
when to use GI - correct -answer-- indirect/direct pulp cap
- waiting for definitive diagnosis ( temp )
- not enough time to place a filling
- temp cement for inlay/only
