Dental materials final exam questions
with complete solutions
An impression is a _____________ reproduction of the teeth and surrounding tissues.
CORRECT ANSWERS negative
The most common use for alginate is: CORRECT ANSWERS impressions
Syneresis of an impression occurs when: CORRECT ANSWERS water is lost
The most convenient way to alter the setting time for alginate is: CORRECT ANSWERS
adjust the water temp
Another name for alginate is: CORRECT ANSWERS irreversible hydrocolloid
When loading a tray with an impression material: CORRECT ANSWERS have it
smooth, NO CLUMPS, and place evenly
The removal of an alginate from the mouth is accomplished with: CORRECT
ANSWERS one firm motion
After removing an alginate impression from the patient's mouth you notice the texture to
be "grainy." Which of the following variables probably caused this problem? CORRECT
ANSWERS did not mix well or long enough or to much
After removing a hydrocolloid impression from the mouth the operator should:
CORRECT ANSWERS rinse/spray/ disinfect & wrap in paper towel
A replica of a single tooth is referred to as a: CORRECT ANSWERS die
________ is used as a cavity liner or as pulp-capping material. CORRECT ANSWERS
calcium hydroxide
Zinc oxide eugenol contains ____, which soothes tooth structures. CORRECT
ANSWERS clove oil
Which of the following are characteristics of cavity varnish? CORRECT ANSWERS seal
dentinal
Which of the following are characteristics of calcium hydroxide? CORRECT ANSWERS
replaces the need for dentin sealer
The most common silver alloy used as a restorative is a ____ type. CORRECT
ANSWERS copper
with complete solutions
An impression is a _____________ reproduction of the teeth and surrounding tissues.
CORRECT ANSWERS negative
The most common use for alginate is: CORRECT ANSWERS impressions
Syneresis of an impression occurs when: CORRECT ANSWERS water is lost
The most convenient way to alter the setting time for alginate is: CORRECT ANSWERS
adjust the water temp
Another name for alginate is: CORRECT ANSWERS irreversible hydrocolloid
When loading a tray with an impression material: CORRECT ANSWERS have it
smooth, NO CLUMPS, and place evenly
The removal of an alginate from the mouth is accomplished with: CORRECT
ANSWERS one firm motion
After removing an alginate impression from the patient's mouth you notice the texture to
be "grainy." Which of the following variables probably caused this problem? CORRECT
ANSWERS did not mix well or long enough or to much
After removing a hydrocolloid impression from the mouth the operator should:
CORRECT ANSWERS rinse/spray/ disinfect & wrap in paper towel
A replica of a single tooth is referred to as a: CORRECT ANSWERS die
________ is used as a cavity liner or as pulp-capping material. CORRECT ANSWERS
calcium hydroxide
Zinc oxide eugenol contains ____, which soothes tooth structures. CORRECT
ANSWERS clove oil
Which of the following are characteristics of cavity varnish? CORRECT ANSWERS seal
dentinal
Which of the following are characteristics of calcium hydroxide? CORRECT ANSWERS
replaces the need for dentin sealer
The most common silver alloy used as a restorative is a ____ type. CORRECT
ANSWERS copper
