Chapter 4 EFDA hottel bases and liners
Questions with Detailed Verified
Answers
Question: What are the 9 reasons to use bases and liners?
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
Question:
Basic function of a sealer?
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Answer: 1. seal off dentin tubules/ prevent chemical irritation
2. reduces leakage around restoration
3. Do not offer thermal protection
Question:
Cavity varnish
Answer: a thin layer placed on the floor and walls of the preparation to seal
the tubules and minimize micro-leakage on amalgam fillings.
Question:
What is a reinforcer?
Answer: used to protect the pulp from pressures during condensing
Question:
Types of Reinforcers
Answer: any material used in a thick layer between floor of prep and
restorative material.
Question:
Insulators
Answer: protect pulp from thermal irritation
Question: