unit 6 Question and answers verified to pass 2024/2025
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Course
DENTURES,DX AND TX PLANNING
Institution
DENTURES,DX AND TX PLANNING
unit 6 Question and answers verified to pass 2024/2025 unit 6
An impression is a positive reproduction of teeth and surrounding oral tissues. The model created from the impression is a negative reproduction of the structures.
a. Both statements are correct.
b. The first statement is correct; t...
unit 6
An impression is a positive reproduction of teeth and surrounding oral tissues.
The model created from the impression is a negative reproduction of the
structures.
a. Both statements are correct.
b. The first statement is correct; the second statement is incorrect.
c. Neither statement is correct.
d. The first statement is incorrect; the second statement is correct. - correct
answer ✔c. Neither statement is correct.
An impression tray should be sufficiently deep to allow _____ mm of material
between the tray and the incisal or occlusal edges of the teeth.
a. 2 to 3
b. 6 to 7
c. 0.5 to 1
d. 4 to 5 - correct answer ✔a. 2 to 3
Which statement is correct regarding custom impression trays?
a. They do not require adhesive if they are smooth surface.
b. They are made from a preliminary model after the dentist has prepared the
teeth.
c. They are available only as full-arch trays.
d. They can be constructed from resin. - correct answer ✔d. They can be
constructed from resin.
Which irreversible hydrocolloid material is used most widely for preliminary
impressions?
, a. Polysulfide
b. Polyether
c. Light-bodied elastomeric impression material
d. Alginate - correct answer ✔Alginate
What term is used when an alginate impression takes up water either from
soaking or wrapping in a wet paper towel?
a. Syneresis
b. Tempering
c. Imbibition
d. Viscosity - correct answer ✔Imbibition
Which of the following is utilized to extend the length or depth of the borders
of an alginate impression tray?
a. Utility wax
b. Border molding compound
c. Boxing wax
d. Acrylic - correct answer ✔a. Utility wax
Which type of impression is taken to produce a reproduction of the occlusal
relationship of the maxilla and mandible teeth when in centric occlusion?
a. Bite registration
b. Preliminary
c. Final
d. Articulated - correct answer ✔a. Bite registration
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