Question 1

A full metal crown that has the outer layers covered with a thin layer of porcelain is a(n) :

Accepted Answer

A)  porcelain jacket crown.
B)  porcelain-fused-to-metal crown.
C)  onlay.
D)  three-quarter crown.

Question 2

When one or more teeth are missing from the same arch,a permanent _____ is recommended.

Accepted Answer

A)  partial denture
B)  fixed bridge
C)  porcelain-fused-to-metal crown
D)  denture

Question 3

The tapered finish line of the margin at the cervical area of a tooth preparation is a(n) :

Accepted Answer

A)  articulator.
B)  chamfer.
C)  core.
D)  shoulder.

Question 4

Which of the following statements is true concerning porcelain veneers?

Accepted Answer

A)  They are usually recommended to improve chewing efficiency of posterior teeth.
B)  The color of the finished veneer can be affected by the shade of the underlying tooth structure and by the color of the luting agent.
C)  Porcelain veneers do not involve preparation of tooth structure.
D)  Provisional coverage is required following impressions for porcelain veneers.

Question 5

The component of the bridge that provides support for the replacement teeth is a(n) :

Accepted Answer

A)  abutment.
B)  pontic.
C)  unit.
D)  core.

Question 6

Which statement is not true concerning retention pins?

Accepted Answer

A)  Retention pins may be necessary to add strength to the core buildup.
B)  The location of the pulp determines the exact location of the placement of the pins.
C)  Retention pins can only be used if the tooth has been treated endodontically.
D)  The type of crown being fabricated is a determining factor for the placement of the pins.

Question 7

The purpose of a core buildup is to:

Accepted Answer

A)  support the cast crown.
B)  provide a larger area of surface retention for cementation.
C)  both a and b.
D)  neither a nor b; core buildups are not used with cast crowns.

Question 8

Which of the following is an example of a fixed prosthesis?

Accepted Answer

A)  Composite resin
B)  Silver dental amalgam
C)  Three-unit bridge
D)  Pin-retained silver dental amalgam

Question 9

Which statement(s)  is true of packing retraction cord?

Accepted Answer

A)  It is important to place the retraction cord into the sulcus without damaging the surrounding gingival tissues.
B)  The placement and removal of gingival retraction cord are expanded functions and may be performed by a dental assistant trained in expanded functions.
C)  Generally, the operator removes the cord while the assistant prepares the impression material.
D)  All of these statements are true.

Question 10

Which of the following should be included on the laboratory prescription?

Accepted Answer

A)  Dentist's name, license number, address, and signature
B)  Type of prosthesis requested
C)  Date when the case is expected back
D)  All of the above

Question 11

A post can be used as a retention aid for a crown,provided that the tooth:

Accepted Answer

A)  is vital.
B)  has been treated endodontically.
C)  has not been treated endodontically.
D)  is non-restorable. B

Question 12

Each component of a fixed bridge is referred to as a:

Accepted Answer

A)  tooth.
B)  crown.
C)  unit.
D)  core.

Question 13

An important step in placing a porcelain veneer is:

Accepted Answer

A)  making a provisional to be worn while the veneer is being made.
B)  matching the tooth color of the veneer to the adjacent teeth.
C)  making sure the veneer is thick enough block out underlying color.
D)  making the cement used a shade darker than the veneer. B

Question 14

_____ can be used in selected situations,such as a replacement for a congenitally missing lateral incisor,as an alternative to a traditional bridge.

Accepted Answer

A)  A resin-bonded bridge
B)  A Maryland bridge
C)  Both a and b
D)  A crown

Question 15

The opening into which the post is cemented is a:

Accepted Answer

A)  keyway slot.
B)  chamfer.
C)  shoulder.
D)  post channel.

Question 16

When the patient has a fixed prosthesis,such as a three-unit bridge,the area under the pontic is maintained by:

Accepted Answer

A)  brushing with a toothbrush.
B)  threading dental floss under the pontic with a bridge threader.
C)  irrigation with a cannula.
D)  swishing with a mouthrinse.

Question 17

The most common method to obtain gingival retraction is:

Accepted Answer

A)  chemical retraction.
B)  mechanical retraction.
C)  surgical retraction.
D)  completed with an infuser.

Question 18

A gingival retraction cord is placed _____ the crown preparation is completed; it is removed _____ the final impression is taken.

Accepted Answer

A)  after; after
B)  after; before
C)  before; after
D)  before; before

Question 19

Which of the following procedures takes place during the second appointment for the placement of a cast restoration?

Accepted Answer

A)  Shade selection
B)  Preliminary impressions
C)  Final impressions
D)  Try-in

Question 20

In general,the purposes of provisional coverage are to:

Accepted Answer

A)  maintain and/or restore tooth function.
B)  provide comfort for the patient while the permanent restoration is being fabricated.
C)  protect the margins of the prepared tooth.
D)  all of the above. D

Exam 50: Fixed Prosthodontics

A full metal crown that has the outer layers covered with a thin layer of porcelain is a(n) :

Correct AnswerverifiedShow Answer

When one or more teeth are missing from the same arch,a permanent _____ is recommended.

Correct AnswerverifiedShow Answer

The tapered finish line of the margin at the cervical area of a tooth preparation is a(n) :

Correct AnswerverifiedShow Answer

Which of the following statements is true concerning porcelain veneers?

Correct AnswerverifiedShow Answer

The component of the bridge that provides support for the replacement teeth is a(n) :

Correct AnswerverifiedShow Answer

Which statement is not true concerning retention pins?

Correct AnswerverifiedShow Answer

The purpose of a core buildup is to:

Correct AnswerverifiedShow Answer

Which of the following is an example of a fixed prosthesis?

Correct AnswerverifiedShow Answer

Which statement(s) is true of packing retraction cord?

Correct AnswerverifiedShow Answer

Which of the following should be included on the laboratory prescription?

Correct AnswerverifiedShow Answer

A post can be used as a retention aid for a crown,provided that the tooth:

Correct AnswerverifiedB

Each component of a fixed bridge is referred to as a:

Correct AnswerverifiedShow Answer

An important step in placing a porcelain veneer is:

Correct AnswerverifiedB

_____ can be used in selected situations,such as a replacement for a congenitally missing lateral incisor,as an alternative to a traditional bridge.

Correct AnswerverifiedShow Answer

The opening into which the post is cemented is a:

Correct AnswerverifiedShow Answer

When the patient has a fixed prosthesis,such as a three-unit bridge,the area under the pontic is maintained by:

Correct AnswerverifiedShow Answer

The most common method to obtain gingival retraction is:

Correct AnswerverifiedShow Answer

A gingival retraction cord is placed _____ the crown preparation is completed; it is removed _____ the final impression is taken.

Correct AnswerverifiedShow Answer

Which of the following procedures takes place during the second appointment for the placement of a cast restoration?

Correct AnswerverifiedShow Answer

In general,the purposes of provisional coverage are to:

Correct AnswerverifiedD

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B

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B

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A gingival retraction cord is placed _ the crown preparation is completed; it is removed _ the final impression is taken.

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D