DASLE MN Exam Questions with Correct Answers Latest Version 2025-2026 Graded A+
When taking alginate impressions, having the patient swish with a mouth rinse such as Listerine prior to
impressing helps decrease all of the following except:
a: drooling by the patient
B: microorganisms on the impression
C: gagging by the patient
D: bubbles in the material - Answers a: Drooling by the patient
You are seating your patient to take alginate impressions, what position will you have them in?
A: upright
B: reclined
C: standing
D: supine - Answers a: Upright
Which of the following would not be an effective communication method?
A: ask the patient to use predetermined hand signals to communicate with you
B: explain to the patient that the material may feel cold
C: Ask the patient to breath through their mouth
D: inform the patient that they can bring their head forward and off the headrest once you have seated
the impression - Answers C: Ask the patient to breath through their mouth
In order to best record the muscle attachments, frenums, and achieve a complete peripheral roll, the
operator will need to perform_________ by gently massaging the patients lips and cheeks.
A: facial trimming
B: frenectomy
C: muscle trimming
D; muscle rolling - Answers C: muscle trimming
A main advantage of polyvinyl siloxane is that it has high dimensional stability and pouring can be
delayed for up to 7-10 days without distorting.
,True
False - Answers TRUE
Polysulfide is an impression material where the disadvantages outweigh the advantages. Some of the
main disadvantages are the odor, bad taste, it stains, and has a long setting time.
True
False - Answers TRUE
An impression tray should extend _____ mm beyond the last tooth in the arch.
A: 1-2
B: 2-3
C: 3-4
D: 4-5 - Answers B: 2-3
If an alginate impression remains in the open air, moisture will evaporate from the material, causing it to
shrink and distort. This condition is called:
A: expansion
B: imbibition
C: synersis
D: adaptation - Answers C: synersis
As a right handed operator, when seating the mandibular impression, you want to be standing at the
side of the patient, near 8-9 o'clock. When seating the maxillary impression, you will want to be behind
the patients head, near 11-12 o'clock.
True
False - Answers TRUE
When might the fabrication of a custom tray be necessary?
A: the stock trays do not fit the patients mouth properly
B: the patient is edentulous
C: the patient needs whitening trays
D: the patient needs a specific orthodontic appliance
,E: all of the above - Answers E: all of the above
The purpose for the perforations in the impression trays is:
A; to allow the impression material to flow out of the perforations B: creating a mechanical lock
between the impression and the tray
to allow for easier cleaning of the trays
C: to allow air to escape in order to reduce the amount of bubbles in the impression
D: to help reduce gagging by allowing excess material out of the mouth - Answers A; to allow the
impression material to flow out of the perforations
What is the water-to-powder ratio for taking an adult maxillary alginate impression?
A: 1 scoop of powder to 1 measure of water
B: 2 scoops of powder to 2 measure of water
C: 3 scoop of powder to 3 measure of water
D: 1 scoop of powder to 2 measure of water - Answers C: 3 scoop of powder to 3 measure of water
A patient is coming in for a crown prep on tooth #30. At the beginning of the appointment you use
polyvinyl siloxane impression material to take a preliminary impression so you are able to fabricate a
temporary crown. At the end of the appointment there needs to be a final impression taken of the tooth
after it is prepared. Who is legally responsible and delegated to take this final impression?
A: RDH
B: LDA
C: RDA
D: DDS - Answers D; DDS
An impression is defined as a positive reproduction of oral tissue and surrounding structures, where a
stone cast is a negative reproduction.
True
False - Answers FALSE
Elastomeric impression materials are great for taking final impressions when accuracy and detail are
needed, all of the following are examples of elastomeric materials except:
A: polyvinyl siloxane
, B: reversible hydrocolloid
C: polysulfide
D: polyether
E: silicone - Answers B: reversible hydrocolloid
The _______ tray covers half of a dental arch.
A: Full-arch
B: custom
C: section
D: quadrant - Answers D: quadrant
When seating an alginate impression in the mouth, it is centered over the teeth and then:
A: seated in the anterior first, then the posterior
B: seated in the posterior first, then the anterior
C: seated left to right
D: seated right to left
E: it doesn't matter as long as you get is into the patients mouth before it sets up - Answers B: seated in
the posterior first, then the anterior
Baseplate wax is _________ prior to placing it in the patients mouth for a bite registration.
A:molded
B: placed in a tray
C: warmed
D: cooled - Answers C: warmed
You have just finished taking alginate impressions for bleaching trays, but are unable to pour them up
right away. What should you do?
A: keep them on the counter until you are ready to pour them up
B: wrap them in a moist paper towel and place them in a plastic bag
C: soak them in a bowl of water
When taking alginate impressions, having the patient swish with a mouth rinse such as Listerine prior to
impressing helps decrease all of the following except:
a: drooling by the patient
B: microorganisms on the impression
C: gagging by the patient
D: bubbles in the material - Answers a: Drooling by the patient
You are seating your patient to take alginate impressions, what position will you have them in?
A: upright
B: reclined
C: standing
D: supine - Answers a: Upright
Which of the following would not be an effective communication method?
A: ask the patient to use predetermined hand signals to communicate with you
B: explain to the patient that the material may feel cold
C: Ask the patient to breath through their mouth
D: inform the patient that they can bring their head forward and off the headrest once you have seated
the impression - Answers C: Ask the patient to breath through their mouth
In order to best record the muscle attachments, frenums, and achieve a complete peripheral roll, the
operator will need to perform_________ by gently massaging the patients lips and cheeks.
A: facial trimming
B: frenectomy
C: muscle trimming
D; muscle rolling - Answers C: muscle trimming
A main advantage of polyvinyl siloxane is that it has high dimensional stability and pouring can be
delayed for up to 7-10 days without distorting.
,True
False - Answers TRUE
Polysulfide is an impression material where the disadvantages outweigh the advantages. Some of the
main disadvantages are the odor, bad taste, it stains, and has a long setting time.
True
False - Answers TRUE
An impression tray should extend _____ mm beyond the last tooth in the arch.
A: 1-2
B: 2-3
C: 3-4
D: 4-5 - Answers B: 2-3
If an alginate impression remains in the open air, moisture will evaporate from the material, causing it to
shrink and distort. This condition is called:
A: expansion
B: imbibition
C: synersis
D: adaptation - Answers C: synersis
As a right handed operator, when seating the mandibular impression, you want to be standing at the
side of the patient, near 8-9 o'clock. When seating the maxillary impression, you will want to be behind
the patients head, near 11-12 o'clock.
True
False - Answers TRUE
When might the fabrication of a custom tray be necessary?
A: the stock trays do not fit the patients mouth properly
B: the patient is edentulous
C: the patient needs whitening trays
D: the patient needs a specific orthodontic appliance
,E: all of the above - Answers E: all of the above
The purpose for the perforations in the impression trays is:
A; to allow the impression material to flow out of the perforations B: creating a mechanical lock
between the impression and the tray
to allow for easier cleaning of the trays
C: to allow air to escape in order to reduce the amount of bubbles in the impression
D: to help reduce gagging by allowing excess material out of the mouth - Answers A; to allow the
impression material to flow out of the perforations
What is the water-to-powder ratio for taking an adult maxillary alginate impression?
A: 1 scoop of powder to 1 measure of water
B: 2 scoops of powder to 2 measure of water
C: 3 scoop of powder to 3 measure of water
D: 1 scoop of powder to 2 measure of water - Answers C: 3 scoop of powder to 3 measure of water
A patient is coming in for a crown prep on tooth #30. At the beginning of the appointment you use
polyvinyl siloxane impression material to take a preliminary impression so you are able to fabricate a
temporary crown. At the end of the appointment there needs to be a final impression taken of the tooth
after it is prepared. Who is legally responsible and delegated to take this final impression?
A: RDH
B: LDA
C: RDA
D: DDS - Answers D; DDS
An impression is defined as a positive reproduction of oral tissue and surrounding structures, where a
stone cast is a negative reproduction.
True
False - Answers FALSE
Elastomeric impression materials are great for taking final impressions when accuracy and detail are
needed, all of the following are examples of elastomeric materials except:
A: polyvinyl siloxane
, B: reversible hydrocolloid
C: polysulfide
D: polyether
E: silicone - Answers B: reversible hydrocolloid
The _______ tray covers half of a dental arch.
A: Full-arch
B: custom
C: section
D: quadrant - Answers D: quadrant
When seating an alginate impression in the mouth, it is centered over the teeth and then:
A: seated in the anterior first, then the posterior
B: seated in the posterior first, then the anterior
C: seated left to right
D: seated right to left
E: it doesn't matter as long as you get is into the patients mouth before it sets up - Answers B: seated in
the posterior first, then the anterior
Baseplate wax is _________ prior to placing it in the patients mouth for a bite registration.
A:molded
B: placed in a tray
C: warmed
D: cooled - Answers C: warmed
You have just finished taking alginate impressions for bleaching trays, but are unable to pour them up
right away. What should you do?
A: keep them on the counter until you are ready to pour them up
B: wrap them in a moist paper towel and place them in a plastic bag
C: soak them in a bowl of water
