Chapter 18 Review Questions

Question 1

Intracoronal provisional restorations must
A. Contact adjacent teeth and be crimped with crimping pliers to fit snugly
B. Contact adjacent teeth, be crimped with crimping pliers to fit snugly, and be sealed at the margins
C. Contact adjacent teeth and be sealed at the margins
D. Contact adjacent teeth, be crimped with crimping pliers to fit snugly, be sealed at the margins, and be made of metal for strength on posterior teeth

Answer 1

C.

Question 2

Polycarbonate crowns are used primarily
A. On posterior teeth
B. On anterior teeth
C. For multiunit bridges
D. For inlays

Answer 2

B.

Question 3

If provisional coverage does not fir the tooth properly,
A. Food impaction may occur and periodontal irritation may occur
B. Periodontal irritation may occur and tooth migration may occur
C. Food impaction may occur, periodontal irritation may occur, and hypersensitivity of the prepared tooth may occur
D. Food impaction may occur, periodontal irritation may occur, hypersensitivity of the prepared tooth may occur, and tooth migration may occur

Answer 3

D.

Question 4

Properties of provisional materials used for posterior teeth include the following
A. Strength
B. Tissue compatibility
C. Ease of handling
D. All of the above

Answer 4

D.

Question 5

Appropriate choices for extracoronal provisional coverage include
A. Stainless steel crown
B. Acrylic and/or composite customized provisionals
C. A and B
D. None of the above

Answer 5

C.

Question 6

You will need to obtain a preparation template of the tooth before fabricating
A. Intracoronal provisional restorations
B. Aluminum crown provisionals
C. Polycarbonate crown provisionals
D. Custom provisional restorations

Answer 6

D.

Question 7

The first step in fabricating a stainless steel crown is
A. Determining occlusal/incisal-to-gingival dimensions
B. Determining mesial/distal dimensions
C. Determining the contour of the finish line
D. Determining occlusal height

Answer 7

B.

Question 8

To customize the internal fit of a preformed crown,
A. Composite provisional material is used
B. Zinc phosphate cement is used
C. Acrylic provisional material is used
D. Composite and acrylic provisional materials are used

Answer 8

D.

Question 9

Temporary custom crowns placed on prepared teeth are usually constructed of
A. Wax
B. Acrylic
C. Stainless steel
D. Polycarbonate

Answer 9

B.

Question 10

When placing cement temporary restorations,
A. Wipe the cement toward the margin
B. Wipe the cement away from the margin
C. Wipe the cement toward the matrix band
D. Allow the cement to harden before sealing the margins

Answer 10

A.

Question 11

Criteria for a cement temporary include all of the following except
A. Marginal ridges a the same height as adjacent teeth
B. Sufficient contact with adjacent teeth
C. Detailed occlusal anatomy
D. Reproduction of the gingival embrasure

Answer 11

C.