Question 1

The usual set time for the mixed acrylic before placement into the mouth is:

Accepted Answer

A)  1 to 2 minutes.
B)  approximately 3 minutes.
C)  20 to 30 seconds.
D)  4 to 5 minutes.

Question 2

When fabricating a provisional,undercuts on the proximal surfaces of adjacent teeth can cause _____ the provisional.

Accepted Answer

A)  inadequate margins on
B)  locking on of
C)  occlusal voids on
D)  distortion of

Question 3

Provisional crowns are commonly cemented with _____ cement.

Accepted Answer

A)  temporary
B)  polycarboxylate
C)  glass ionomer
D)  composite resin

Question 4

The provisional that used a polymer shell filled with a hybrid composite resin that bonds with the pre-formed crown and tooth is a ____ crown.

Accepted Answer

A)  stainless steel
B)  custom provisional
C)  polycarbonate
D)  pre-formed polymer

Question 5

Laboratory-fabricated coverage would be used when:

Accepted Answer

A)  the size and shape of the teeth would indicate the need for it.
B)  several teeth have been prepared, such as in a multiunit bridge.
C)  the patient wants a custom made provisional.
D)  a patient has an allergy to the acrylic. B

Question 6

The cervical margins of the provisional should have no more than ___ mm of space between the crown margin and the finish line of the preparation.

Accepted Answer

A)  1.0
B)  0.1
C)  0.5
D)  0.10

Question 7

_____ crowns are pre-formed crowns used for provisional coverage on anterior teeth,when appearance is important.

Accepted Answer

A)  Aluminum
B)  Polycarbonate
C)  Stainless steel
D)  Nickel-chromium

Question 8

Indications for provisional coverage include:

Accepted Answer

A)  maintaining the function of the prepared tooth.
B)  preventing shifting of opposing teeth.
C)  keeping the patient comfortable while the prosthesis is being made.
D)  all of the above. D

Question 9

Patient home-care instructions for someone with provisional coverage should instruct him to:

Accepted Answer

A)  "pop" the floss out of the contact.
B)  pull floss through the contact, either to the facial or lingual side, once floss is placed below the contact.
C)  have the provisional coverage recemented or replaced if it becomes loose or is lost.
D)  leave the provisional coverage out of the mouth until the final restoration is cemented if it becomes loose or is lost. B

Question 10

One of the two most common materials used for custom provisional coverage is:

Accepted Answer

A)  self-curing acrylic resin.
B)  light-cured composite resin.
C)  polycarbonate shells.
D)  alginate.

Question 11

Prefabricated temporary crowns:

Accepted Answer

A)  can be used for posterior but not anterior preparations.
B)  are available in cast gold.
C)  are available in porcelain fused-to-metal.
D)  made of polycarbonate are used where appearance is important.

Question 12

Why is the provisional placed on the tooth in the patient's mouth for the final curing stage?

Accepted Answer

A)  To ensure the color and shape of the provisional match the tooth
B)  To ensure the provisional is in correct occlusion
C)  To avoid excess shrinkage of the provisional during the final curing stage
D)  To check the margins for accuracy before curing

Question 13

When using a pre-formed provisional crown,the crown is tried on for shape and size _____ the tooth is prepared.

Accepted Answer

A)  after
B)  during the time
C)  before
D)  none of the above; the pre-formed crown is tried on at an appointment that occurs before the crown preparation appointment.

Question 14

What should be done if the margins of the provisional are not adequate?

Accepted Answer

A)  Throw it away and start over.
B)  Additional material may be added at the inner aspect of the margin and then the provisional be reseated for setting.
C)  Since it is a temporary crown, the margins are not critical.
D)  Remove the material from the gingival embrasure space with a Hollenback instrument.

Question 15

Home care instructions for a patient with provisional coverage include:

Accepted Answer

A)  to avoid chewing on the provisional.
B)  to brush carefully, avoid flossing as that may pop the provisional off.
C)  if the provisional should come off, contact the office immediately so it can be put back on.
D)  no special home care instructions are required.

Question 16

The most common type of provisional coverage used for crown and bridge preparations is:

Accepted Answer

A)  the pre-formed polymer crown.
B)  custom-made.
C)  the aluminum crown.
D)  the polycarbonate crown.

Question 17

The two types of provisional coverage include _____ and _____.

Accepted Answer

A)  direct and indirect
B)  functional and esthetical
C)  custom and prefabricated
D)  polymer and monomer

Question 18

The setting time for the resin placed in a pre-formed crown is approximately ___ seconds.

Accepted Answer

A)  20 to 30
B)  30 to 40
C)  60
D)  90

Question 19

Once the acrylic-loaded impression is on the prepared tooth,it should remain on the tooth for approximately how long?

Accepted Answer

A)  1 to 2 minutes
B)  3 minutes
C)  90 seconds
D)  4 to 5 minutes

Question 20

The provisional is trimmed to within ___ mm of the gingival shoulder of the prepared tooth.

Accepted Answer

A)  1
B)  2
C)  3
D)  4

Exam 51: Provisional Coverage

The usual set time for the mixed acrylic before placement into the mouth is:

Correct AnswerverifiedShow Answer

When fabricating a provisional,undercuts on the proximal surfaces of adjacent teeth can cause _____ the provisional.

Correct AnswerverifiedShow Answer

Provisional crowns are commonly cemented with _____ cement.

Correct AnswerverifiedShow Answer

The provisional that used a polymer shell filled with a hybrid composite resin that bonds with the pre-formed crown and tooth is a ____ crown.

Correct AnswerverifiedShow Answer

Laboratory-fabricated coverage would be used when:

Correct AnswerverifiedB

The cervical margins of the provisional should have no more than ___ mm of space between the crown margin and the finish line of the preparation.

Correct AnswerverifiedShow Answer

_____ crowns are pre-formed crowns used for provisional coverage on anterior teeth,when appearance is important.

Correct AnswerverifiedShow Answer

Indications for provisional coverage include:

Correct AnswerverifiedD

Patient home-care instructions for someone with provisional coverage should instruct him to:

Correct AnswerverifiedB

One of the two most common materials used for custom provisional coverage is:

Correct AnswerverifiedShow Answer

Prefabricated temporary crowns:

Correct AnswerverifiedShow Answer

Why is the provisional placed on the tooth in the patient's mouth for the final curing stage?

Correct AnswerverifiedShow Answer

When using a pre-formed provisional crown,the crown is tried on for shape and size _____ the tooth is prepared.

Correct AnswerverifiedShow Answer

What should be done if the margins of the provisional are not adequate?

Correct AnswerverifiedShow Answer

Home care instructions for a patient with provisional coverage include:

Correct AnswerverifiedShow Answer

The most common type of provisional coverage used for crown and bridge preparations is:

Correct AnswerverifiedShow Answer

The two types of provisional coverage include _____ and _____.

Correct AnswerverifiedShow Answer

The setting time for the resin placed in a pre-formed crown is approximately ___ seconds.

Correct AnswerverifiedShow Answer

Once the acrylic-loaded impression is on the prepared tooth,it should remain on the tooth for approximately how long?

Correct AnswerverifiedShow Answer

The provisional is trimmed to within ___ mm of the gingival shoulder of the prepared tooth.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
B

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
D

Correct Answer
verified
B

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The two types of provisional coverage include _ and _.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified