EFDA OREGON EXAMINATION TEST 2026
QUESTIONS WITH SOLUTIONS
◉ Glass Ionomer used as a base? Answer: Good adhesion to enamel and
dentin, release fluoride and has bonding strengths.
◉ Zinc-oxide-eugenol type 1used as a base? Answer: Sedative,
insulating helps with irrated pulp. CANT USE UNDER GLASS
IONOMER AND COMPOSTIE.
◉ Zinc phosphate type 2 used as a base? Answer: Good base for it
thermal insulation qualities and can be used under polycarboxylate,
ionomer and it can irrate the pulp.
◉ Trituration Answer: Means mixing dental alloy with mercury.
◉ Amalgamation Answer: Actual chemical reaction that occurs between
the alloy and mercury.
◉ Alloy Answer: Combination between alloy and mercury.
,◉ Polycarboxylate used as a base? Answer: Has elastic properties and
contains fluoride and can be put under any restoration. Also proactive
and insulating.
◉ IRM used as a base? Answer: last for 6-12 months and is temp. Also
has a sedative base.
◉ Sedative base ? Answer: Help with soothing the pulp for decay that is
irrating the pulp.
◉ Insulating base? Answer: Placed in deep cavity preps to protect the
tooth from thermal shock.
◉ Protective base? Answer: Placed before the restoration is place to
protect the pulp.
◉ Primer? Answer: Can also be know as desensitizer. Placed under
restorative material.
◉ Fluoride varnish? Answer: Release fluoride on enamel, root structure
and the dentin surfaces.
◉ Varnish? Answer: Organic solvent, seals dentin tubules and reduces
microleakage.
, ◉ Micro- mechanical? Answer: Retention between the tooth structure
and the restoration.
◉ Three things dental bases can do for the tooth? Answer: 1. protective
base
2. insulating base
3. sedative base
◉ Calcium Hydroxide? Answer: Used as a base/ liner, promotes
secondary dentin.
◉ Smear layer? Answer: Very thin layer of debris on newly prepared
dentin.
◉ Crown matrix former? Answer: Plastic form that is shaped as a crown.
You put prepared cement in the crown former.
◉ Provisional? Answer: temporary cement until the permant restoration
is ready to be cemented.
◉ Permant Polycarboxylate? Answer: Cement stainless steel crowns,
and ortho bands.
QUESTIONS WITH SOLUTIONS
◉ Glass Ionomer used as a base? Answer: Good adhesion to enamel and
dentin, release fluoride and has bonding strengths.
◉ Zinc-oxide-eugenol type 1used as a base? Answer: Sedative,
insulating helps with irrated pulp. CANT USE UNDER GLASS
IONOMER AND COMPOSTIE.
◉ Zinc phosphate type 2 used as a base? Answer: Good base for it
thermal insulation qualities and can be used under polycarboxylate,
ionomer and it can irrate the pulp.
◉ Trituration Answer: Means mixing dental alloy with mercury.
◉ Amalgamation Answer: Actual chemical reaction that occurs between
the alloy and mercury.
◉ Alloy Answer: Combination between alloy and mercury.
,◉ Polycarboxylate used as a base? Answer: Has elastic properties and
contains fluoride and can be put under any restoration. Also proactive
and insulating.
◉ IRM used as a base? Answer: last for 6-12 months and is temp. Also
has a sedative base.
◉ Sedative base ? Answer: Help with soothing the pulp for decay that is
irrating the pulp.
◉ Insulating base? Answer: Placed in deep cavity preps to protect the
tooth from thermal shock.
◉ Protective base? Answer: Placed before the restoration is place to
protect the pulp.
◉ Primer? Answer: Can also be know as desensitizer. Placed under
restorative material.
◉ Fluoride varnish? Answer: Release fluoride on enamel, root structure
and the dentin surfaces.
◉ Varnish? Answer: Organic solvent, seals dentin tubules and reduces
microleakage.
, ◉ Micro- mechanical? Answer: Retention between the tooth structure
and the restoration.
◉ Three things dental bases can do for the tooth? Answer: 1. protective
base
2. insulating base
3. sedative base
◉ Calcium Hydroxide? Answer: Used as a base/ liner, promotes
secondary dentin.
◉ Smear layer? Answer: Very thin layer of debris on newly prepared
dentin.
◉ Crown matrix former? Answer: Plastic form that is shaped as a crown.
You put prepared cement in the crown former.
◉ Provisional? Answer: temporary cement until the permant restoration
is ready to be cemented.
◉ Permant Polycarboxylate? Answer: Cement stainless steel crowns,
and ortho bands.
