DASLE MN Questions and Answers |
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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
✓ -:- 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
✓ -:- 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
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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
✓ -:- 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
✓ -:- 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
✓ -:- TRUE
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,2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!
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
✓ -:- 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
✓ -:- 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
✓ -:- C: synersis
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, 2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!
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
✓ -:- 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
✓ -:- 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
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