DENTAL ASSISTANT LICENSURE ACTUAL EXAM
PAPER WITH 100% CORRECT SOLUTIONS FOR
2026.
⫸ True or False: Once completed with nitrous, the patient should
breath 100% oxygen for 5 minutes Answer: True
⫸ What is the best way to prevent gagging during an impression or
xrays? Answer: Topical
⫸ When taking a lower impression, what occlusal plane is parallel to
the floor? Answer: Lower
⫸ Why do you remove the impression with a quick snap? Answer: To
prevent distortion
⫸ How would you get an accurate impression of the vestiubule?
Answer: Put wax on the tray
⫸ For strength and accuracy when pouring a final impression you
should use what? Answer: Correct water to powder ratio
⫸ What would cause imbibition? Answer: An impression being left in
a wet paper towel too long.
,⫸ What is the best disinfectant for alginate? Answer: Gluteraldehyde,
Iodophers
⫸ What is the best way to eliminate bubbles in an impression?
Answer: Paint occlusals
⫸ How would you correct an impression that is 3mm short of the
retro molar pad? Answer: Move the tray more posterior
⫸ If the impression perforates the bottom of the tray that means
Answer: It was too small
⫸ To determine a maxillary tray size, how far back should the tray
extend? Answer: 2mm past the maxillary tuberosity
⫸ What kind of tray should you use for alginate? Answer: Rim lock
⫸ What is a disadvantage to alginate impressions? Answer:
Dimensional change
⫸ What happens if a rubber dam is punched too flat? Answer:
Stretching and bunching
⫸ When you are placing a dental dam, what do you do after it is over
the anchor tooth? Answer: Place over the furthest tooth
, ⫸ If you are working on #21 and #19 is the anchor tooth, what is the
key tooth? Answer: #27
⫸ What would be used to remove any dental dam between the teeth?
Answer: Floss
⫸ What is the dental dam inverted into? Answer: Free gingiva
⫸ What is the lubricant on the dental dam used for Answer: To help
dam slide interproximally
⫸ What teeth would you use a size 3 punch hole for? Answer:
Premolars and molars
⫸ When working on a maxillary central tooth, what teeth should be
exposed? Answer: Canine to canine
⫸ What is used to seat the dam interproximally? Answer: Floss
⫸ What do you use to invert a dental dam? Answer: Dental floss,
plastic, and spoon excavator
⫸ What is the reason for using a heavy dental dam? Answer: Better
gingival retraction
PAPER WITH 100% CORRECT SOLUTIONS FOR
2026.
⫸ True or False: Once completed with nitrous, the patient should
breath 100% oxygen for 5 minutes Answer: True
⫸ What is the best way to prevent gagging during an impression or
xrays? Answer: Topical
⫸ When taking a lower impression, what occlusal plane is parallel to
the floor? Answer: Lower
⫸ Why do you remove the impression with a quick snap? Answer: To
prevent distortion
⫸ How would you get an accurate impression of the vestiubule?
Answer: Put wax on the tray
⫸ For strength and accuracy when pouring a final impression you
should use what? Answer: Correct water to powder ratio
⫸ What would cause imbibition? Answer: An impression being left in
a wet paper towel too long.
,⫸ What is the best disinfectant for alginate? Answer: Gluteraldehyde,
Iodophers
⫸ What is the best way to eliminate bubbles in an impression?
Answer: Paint occlusals
⫸ How would you correct an impression that is 3mm short of the
retro molar pad? Answer: Move the tray more posterior
⫸ If the impression perforates the bottom of the tray that means
Answer: It was too small
⫸ To determine a maxillary tray size, how far back should the tray
extend? Answer: 2mm past the maxillary tuberosity
⫸ What kind of tray should you use for alginate? Answer: Rim lock
⫸ What is a disadvantage to alginate impressions? Answer:
Dimensional change
⫸ What happens if a rubber dam is punched too flat? Answer:
Stretching and bunching
⫸ When you are placing a dental dam, what do you do after it is over
the anchor tooth? Answer: Place over the furthest tooth
, ⫸ If you are working on #21 and #19 is the anchor tooth, what is the
key tooth? Answer: #27
⫸ What would be used to remove any dental dam between the teeth?
Answer: Floss
⫸ What is the dental dam inverted into? Answer: Free gingiva
⫸ What is the lubricant on the dental dam used for Answer: To help
dam slide interproximally
⫸ What teeth would you use a size 3 punch hole for? Answer:
Premolars and molars
⫸ When working on a maxillary central tooth, what teeth should be
exposed? Answer: Canine to canine
⫸ What is used to seat the dam interproximally? Answer: Floss
⫸ What do you use to invert a dental dam? Answer: Dental floss,
plastic, and spoon excavator
⫸ What is the reason for using a heavy dental dam? Answer: Better
gingival retraction
