EFDA OREGON EXAM PREP TEST BANK
2026 FULL QUESTIONS WITH VERIFIED
ANSWERS
◉ What is amalgamation? Answer: Actual chemical reaction that occurs
between the alloy and mercury.
◉ Alloy is... Answer: Combination between alloy and mercury.
◉ How long does IRM last and what type of base is it? Answer: last for
6-12 months and is temp. Also has a sedative base.
◉ What does a Sedative base do ? Answer: Help with soothing the pulp
for decay that is irrating the pulp.
◉ Insulating base does what? Answer: protect the tooth from thermal
shock.
◉ Protective base is placed when and what does it do? Answer: Placed
before the restoration is place to protect the pulp.
, ◉ Where is Primer places and what is it known as? Answer: Can also be
know as desensitizer. Placed under restorative material.
◉ What does Fluoride varnish do and where is it placed? Answer:
Release fluoride on enamel, root structure and the dentin surfaces.
◉ Varnish? Answer: Organic solvent, seals dentin tubules and reduces
microleakage.
◉ Retention between the tooth structure and the restoration? Answer:
Micro mechanical
◉ Three things dental bases can do for the tooth? Answer: 1. protective
base
2. insulating base
3. sedative base
◉ Calcium Hydroxide does what? Answer: Used as a base/ liner,
promotes secondary dentin.
◉ Smear layer? Answer: Very thin layer of debris on newly prepared
dentin.
2026 FULL QUESTIONS WITH VERIFIED
ANSWERS
◉ What is amalgamation? Answer: Actual chemical reaction that occurs
between the alloy and mercury.
◉ Alloy is... Answer: Combination between alloy and mercury.
◉ How long does IRM last and what type of base is it? Answer: last for
6-12 months and is temp. Also has a sedative base.
◉ What does a Sedative base do ? Answer: Help with soothing the pulp
for decay that is irrating the pulp.
◉ Insulating base does what? Answer: protect the tooth from thermal
shock.
◉ Protective base is placed when and what does it do? Answer: Placed
before the restoration is place to protect the pulp.
, ◉ Where is Primer places and what is it known as? Answer: Can also be
know as desensitizer. Placed under restorative material.
◉ What does Fluoride varnish do and where is it placed? Answer:
Release fluoride on enamel, root structure and the dentin surfaces.
◉ Varnish? Answer: Organic solvent, seals dentin tubules and reduces
microleakage.
◉ Retention between the tooth structure and the restoration? Answer:
Micro mechanical
◉ Three things dental bases can do for the tooth? Answer: 1. protective
base
2. insulating base
3. sedative base
◉ Calcium Hydroxide does what? Answer: Used as a base/ liner,
promotes secondary dentin.
◉ Smear layer? Answer: Very thin layer of debris on newly prepared
dentin.
