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


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

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What is the setting time for the resin placed in a preformed crown?


A) 20 to 29 seconds
B) 30 to 59 seconds
C) 60 to 89 seconds
D) 90 to 120 seconds

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The occlusal surface of the provisional coverage should sit _____ the occlusal plane of the adjacent teeth.


A) below (infraocclusion)
B) even with
C) above (supraocclusion)
D) even with or above

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If the liquid or powder acrylic material is being used for the provisional,how many drops of liquid are used?


A) 5
B) 10
C) 12
D) Enough to wet the powder

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What is the purpose of provisional coverage?


A) Restore function to the area of the mouth.
B) Keep the patient comfortable.
C) Maintain function to the area of the mouth.
D) All of the above are correct.

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What is the most common type of provisional coverage used for crown and bridge preparations?


A) Preformed polymer crown
B) Custom-made
C) Aluminum crown
D) Polycarbonate crown

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How far below the margin of the preparation should the provisional crown sit?


A) The provisional should be flush with the margin.
B) Extend one mm below the margin.
C) Extend 2 mm below the margin.
D) Sit 1 mm above the margin.

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When is laboratory-fabricated coverage used?


A) 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.

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Which procedure would require a patient to wear a provisional prosthesis for a longer period of time?


A) Porcelain veneers
B) Implants or periodontal therapy
C) Full gold cast crowns
D) Porcelain jacket crowns

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


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

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When is a thermoplastic tray,used to fabricate a custom provisional,made?


A) Before the dentist prepares the teeth
B) After the dentist prepares the teeth
C) Anytime during the preparation appointment
D) After the final impression is made

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What is the final step after cementing the provisional crown?


A) Remove the gingival retraction cord.
B) Take a periapical radiograph.
C) Check the occlusion.
D) Polish the provisional.

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What is the set time for mixed acrylic before placing it into the mouth?


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

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