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DENTAL MATERIALS
Test Description: DA 204
Instructions: Answer all questions to get your test result.
1) Operative dentistry is the primary responsibility of the ______.
A
general dentist
B
endodontist
C
oral surgeon
D
periodontits
2) The usual material of choice for Class III and Class IV restorations is _____.
A
ceramic
B
amalgam
C
glass ionomer
D
composite resin
3) Which type of elastomeric material has the highest vicoscity?
A
ceramic
B
putty material
C
heavy bodied material
D
light bodied material
4) ____ is classified as a type I dental cement and acts as an adhesive to hold together the indirect restoration and the tooth surface
A
liner
B
luting cement
C
provisiional cement
D
varnish
5) ______ is added to dental amalgam alloy powder to supress oxidation
A
Copper
B
Zinc
C
Tin
D
Silver
6) A matrix must be used to create a wall for which of the following classifiications of tooth restorations?
A
none of these
B
Class III, IV V
C
Class II, III IV
D
Class I,II,III
7) A matrtix band should extend approximately___mm below the gingival margin of the preparation
A
1
B
-2
C
6
D
3
8) Retainer holds the matrix band snudly in position and is most often positioned_____.
A
toward the anterior of mouth
B
toward the posteerior of mouth
C
on the buccal surface of the tooth being restored
D
on the ligual surface of tooth being restored
9) The placement of _____ is an example of enamelbonding
A
dental varnish
B
calcium hydroxide
C
sealant
D
dental base
10) Which of the following is the instrument of choice when positiioning a wooden wedge?
A
explorer
B
amalgam carrier
C
mouth mirror
D
Howe pliers
*select an answer for all questions
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