Question 1

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

Accepted Answer

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

Question 2

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

Accepted Answer

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

Question 3

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

Accepted Answer

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

Question 4

When is laboratory-fabricated coverage used?

Accepted Answer

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. 
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.

Question 5

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

Accepted Answer

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

Question 6

What is the final step after cementing the provisional crown?

Accepted Answer

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

Question 7

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 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. 
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.

Question 8

What is the purpose of provisional coverage?

Accepted Answer

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. 
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.

Question 9

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

Accepted Answer

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 
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

Question 10

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

Accepted Answer

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

Question 11

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

Accepted Answer

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

Question 12

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

Accepted Answer

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. 
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.

Question 13

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

Exam 51: Provisional Coverage

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

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

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

When is laboratory-fabricated coverage used?

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

What is the final step after cementing the provisional crown?

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

What is the purpose of provisional coverage?

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

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

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

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

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

History of Dentistry

The Professional Dental Assistant

The Dental Healthcare Team

Dental Ethics

Dentistry and the Law

General Anatomy

General Physiology

Oral Embryology and Histology

Head and Neck Anatomy

Landmarks of the Face and Oral Cavity

Overview of the Dentitions

Tooth Morphology

Dental Caries

Periodontal Disease

Preventive Dentistry

Nutrition

Oral Pathology

Microbiology

Disease Transmission and Infection Prevention

Principles and Techniques of Disinfection

Principles and Techniques of Instrument Processing and Sterilization

Regulatory and Advisory Agencies

Chemical and Waste Management

Dental Unit Waterlines

Ergonomics

The Patient Record

Vital Signs

Oral Diagnosis and Treatment Planning

The Special Needs and Medically Compromised Patient

Principles of Pharmacology

Assisting in a Medical Emergency

The Dental Office

Delivering Dental Care

Dental Hand Instruments

Dental Handpieces and Accessories

Moisture Control

Anesthesia and Pain Control

Foundations of Radiography, Radiographic Equipment, and Radiation Safety

Digital Imaging, Dental Film, and Processing Radiographs

Legal Issues, Quality Assurance, and Infection Prevention

Intraoral Imaging

Extraoral Imaging

Restorative and Esthetic Dental Materials

Dental Liners, Bases, and Bonding Systems

Dental Cements

Impression Materials

Laboratory Materials and Procedures

General Dentistry

Matrix Systems for Restorative Dentistry

Fixed Prosthodontics

Removable Prosthodontics

Dental Implants

Endodontics

Periodontics

Oral and Maxillofacial Surgery

Pediatric Dentistry

Coronal Polishing

Dental Sealants

Orthodontics

Communication in the Dental Office

Business Operating Systems

Financial Management in the Dental Office

Marketing Your Skills

Filters