EFDA Oregon study UPDATED Exam
Questions and CORRECT Answers
Etchant ? - CORRECT ANSWER - Critical for enamel and dentin in the cavity prep for
good chemical bond.
Glass Ionomer used as a base? - CORRECT ANSWER - Good adhesion to enamel and
dentin, release fluoride and has bonding strengths.
Zinc-oxide-eugenol type 1used as a base? - CORRECT ANSWER - Sedative, insulating
helps with irrated pulp. CANT USE UNDER GLASS IONOMER AND COMPOSTIE.
Zinc phosphate type 2 used as a base? - CORRECT ANSWER - Good base for it thermal
insulation qualities and can be used under polycarboxylate, ionomer and it can irrate the pulp.
Trituration - CORRECT ANSWER - Means mixing dental alloy with mercury.
Amalgamation - CORRECT ANSWER - Actual chemical reaction that occurs between the
alloy and mercury.
Alloy - CORRECT ANSWER - Combination between alloy and mercury.
Polycarboxylate used as a base? - CORRECT ANSWER - Has elastic properties and
contains fluoride and can be put under any restoration. Also proactive and insulating.
IRM used as a base? - CORRECT ANSWER - last for 6-12 months and is temp. Also has a
sedative base.
Sedative base ? - CORRECT ANSWER - Help with soothing the pulp for decay that is
irrating the pulp.
, Insulating base? - CORRECT ANSWER - Placed in deep cavity preps to protect the tooth
from thermal shock.
Protective base? - CORRECT ANSWER - Placed before the restoration is place to protect
the pulp.
Primer? - CORRECT ANSWER - Can also be know as desensitizer. Placed under
restorative material.
Fluoride varnish? - CORRECT ANSWER - Release fluoride on enamel, root structure and
the dentin surfaces.
Varnish? - CORRECT ANSWER - Organic solvent, seals dentin tubules and reduces
microleakage.
Micro- mechanical? - CORRECT ANSWER - Retention between the tooth structure and
the restoration.
Three things dental bases can do for the tooth? - CORRECT ANSWER - 1. protective base
2. insulating base
3. sedative base
Calcium Hydroxide? - CORRECT ANSWER - Used as a base/ liner, promotes secondary
dentin.
Smear layer? - CORRECT ANSWER - Very thin layer of debris on newly prepared dentin.
Crown matrix former? - CORRECT ANSWER - Plastic form that is shaped as a crown.
You put prepared cement in the crown former.
Questions and CORRECT Answers
Etchant ? - CORRECT ANSWER - Critical for enamel and dentin in the cavity prep for
good chemical bond.
Glass Ionomer used as a base? - CORRECT ANSWER - Good adhesion to enamel and
dentin, release fluoride and has bonding strengths.
Zinc-oxide-eugenol type 1used as a base? - CORRECT ANSWER - Sedative, insulating
helps with irrated pulp. CANT USE UNDER GLASS IONOMER AND COMPOSTIE.
Zinc phosphate type 2 used as a base? - CORRECT ANSWER - Good base for it thermal
insulation qualities and can be used under polycarboxylate, ionomer and it can irrate the pulp.
Trituration - CORRECT ANSWER - Means mixing dental alloy with mercury.
Amalgamation - CORRECT ANSWER - Actual chemical reaction that occurs between the
alloy and mercury.
Alloy - CORRECT ANSWER - Combination between alloy and mercury.
Polycarboxylate used as a base? - CORRECT ANSWER - Has elastic properties and
contains fluoride and can be put under any restoration. Also proactive and insulating.
IRM used as a base? - CORRECT ANSWER - last for 6-12 months and is temp. Also has a
sedative base.
Sedative base ? - CORRECT ANSWER - Help with soothing the pulp for decay that is
irrating the pulp.
, Insulating base? - CORRECT ANSWER - Placed in deep cavity preps to protect the tooth
from thermal shock.
Protective base? - CORRECT ANSWER - Placed before the restoration is place to protect
the pulp.
Primer? - CORRECT ANSWER - Can also be know as desensitizer. Placed under
restorative material.
Fluoride varnish? - CORRECT ANSWER - Release fluoride on enamel, root structure and
the dentin surfaces.
Varnish? - CORRECT ANSWER - Organic solvent, seals dentin tubules and reduces
microleakage.
Micro- mechanical? - CORRECT ANSWER - Retention between the tooth structure and
the restoration.
Three things dental bases can do for the tooth? - CORRECT ANSWER - 1. protective base
2. insulating base
3. sedative base
Calcium Hydroxide? - CORRECT ANSWER - Used as a base/ liner, promotes secondary
dentin.
Smear layer? - CORRECT ANSWER - Very thin layer of debris on newly prepared dentin.
Crown matrix former? - CORRECT ANSWER - Plastic form that is shaped as a crown.
You put prepared cement in the crown former.
