DENTAL ASSISTING- FINAL EXAM QUESTIONS &
ANSWERS 2026
The degree to which a dental material can withstand stress is known as - Answers -
resistance
Dental material that is high in solubility is - Answers - More likely to break apart in water
When mixing dental cement - Answers - Make sure the mixing slab is dry and clean
Which of the following provides the strongest protection of the pulp as a base? -
Answers - polycarboxylate
Which of the following types of dental cement should have a thick, clay-like
consistency? - Answers - type 2 zinc oxide eugenol
Which two types of dental cement can irritate the pulp of the tooth? - Answers - zinc
phosphate and composite resin
Before placement of zinc phosphate, its exothermic reaction must be reduced by -
Answers - Spreading the cement over a wide area of the mixing slab
Because of its high acidity, a protective base must be applied before placing which
cement? - Answers - zinc phosphate
What is an added benefit (or benefits) of glass ionomer cement? - Answers - it helps
fight dental caries and it is stronger than zinc phosphate but does not irritate pulp
How is placement of composite resin different from placement of other dental cements?
- Answers - Composite resin must be preceded by placement of an etchant and bonding
agent
Dental models are pouring using which of the following materials? - Answers - stone or
plaster
A dental laboratory vibrator is used to remove air bubbles from - Answers - stone and
plaster mixes
Gold in a gold-noble alloy provides castings with which of the following characteristics? -
Answers - resistance to tarnish and corrosion
A dentist may ask for an impression made from an elastomeric material when - Answers
- accurate detail is essential
, With what material might stock trays be adjusted to fit a particular patient better? -
Answers - dental wax or thermoplastic
The sheet of acrylic resin used to create a vacuum-formed custom tray is softened by
which of the following means? - Answers - heat source
Which of the following is not required when constructing custom trays out of
thermoplastic beads? - Answers - polymerization
Inform a patient of what to expect during an impression procedure by discussing which
of the following? - Answers - the impression materials taste, temp, and setting time
Dental waxes are classified by which of the following purposes? - Answers - impression,
pattern, and processing waxes
The strength of gypsum products used in dentistry is determined by the size of crystals
in the gypsum power and by the - Answers - powder to water ratio
What is the main alloy constituent of the typical amalgam? - Answers - silver
Which is not a typical application for amalgam? - Answers - anterior tooth
What is the Eames technique? - Answers - The ratio of mercury to alloy in amalgam
In capsulated amalgam, what is the pestle for? - Answers - to mix the amalgam and
alloy
Which of following is not a common size for amalgam capsules? - Answers - complete
spill
If a mercury spill occurs - Answers - Use a spill kit, tape, or trap bottle to clean it up
What is the main constituent of the typical composite? - Answers - filler
How are composites cured? - Answers - Either auto cured or light cured, depending on
the composite
What are the three classes of composites? - Answers - Microfilm, macrofill, hybrid
What differentiates flowable composites from packable composites? - Answers -
viscosity
What is the name of the law that covers EFDAs in states? - Answers - dental practice
act
ANSWERS 2026
The degree to which a dental material can withstand stress is known as - Answers -
resistance
Dental material that is high in solubility is - Answers - More likely to break apart in water
When mixing dental cement - Answers - Make sure the mixing slab is dry and clean
Which of the following provides the strongest protection of the pulp as a base? -
Answers - polycarboxylate
Which of the following types of dental cement should have a thick, clay-like
consistency? - Answers - type 2 zinc oxide eugenol
Which two types of dental cement can irritate the pulp of the tooth? - Answers - zinc
phosphate and composite resin
Before placement of zinc phosphate, its exothermic reaction must be reduced by -
Answers - Spreading the cement over a wide area of the mixing slab
Because of its high acidity, a protective base must be applied before placing which
cement? - Answers - zinc phosphate
What is an added benefit (or benefits) of glass ionomer cement? - Answers - it helps
fight dental caries and it is stronger than zinc phosphate but does not irritate pulp
How is placement of composite resin different from placement of other dental cements?
- Answers - Composite resin must be preceded by placement of an etchant and bonding
agent
Dental models are pouring using which of the following materials? - Answers - stone or
plaster
A dental laboratory vibrator is used to remove air bubbles from - Answers - stone and
plaster mixes
Gold in a gold-noble alloy provides castings with which of the following characteristics? -
Answers - resistance to tarnish and corrosion
A dentist may ask for an impression made from an elastomeric material when - Answers
- accurate detail is essential
, With what material might stock trays be adjusted to fit a particular patient better? -
Answers - dental wax or thermoplastic
The sheet of acrylic resin used to create a vacuum-formed custom tray is softened by
which of the following means? - Answers - heat source
Which of the following is not required when constructing custom trays out of
thermoplastic beads? - Answers - polymerization
Inform a patient of what to expect during an impression procedure by discussing which
of the following? - Answers - the impression materials taste, temp, and setting time
Dental waxes are classified by which of the following purposes? - Answers - impression,
pattern, and processing waxes
The strength of gypsum products used in dentistry is determined by the size of crystals
in the gypsum power and by the - Answers - powder to water ratio
What is the main alloy constituent of the typical amalgam? - Answers - silver
Which is not a typical application for amalgam? - Answers - anterior tooth
What is the Eames technique? - Answers - The ratio of mercury to alloy in amalgam
In capsulated amalgam, what is the pestle for? - Answers - to mix the amalgam and
alloy
Which of following is not a common size for amalgam capsules? - Answers - complete
spill
If a mercury spill occurs - Answers - Use a spill kit, tape, or trap bottle to clean it up
What is the main constituent of the typical composite? - Answers - filler
How are composites cured? - Answers - Either auto cured or light cured, depending on
the composite
What are the three classes of composites? - Answers - Microfilm, macrofill, hybrid
What differentiates flowable composites from packable composites? - Answers -
viscosity
What is the name of the law that covers EFDAs in states? - Answers - dental practice
act
