Question 1

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. 
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 2

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. 
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 3

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. 
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 4

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

Question 5

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. 
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 6

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

Question 7

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

Question 8

Provisional crowns are commonly cemented with _____ cement.

Accepted Answer

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

Question 9

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. 
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 10

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. 
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 11

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

Question 12

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

Question 13

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

Question 14

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

Question 15

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

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

Question 17

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. 
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 18

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

Question 19

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

Question 20

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 
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

Exam 51: Provisional Coverage

Laboratory-fabricated coverage would be used when:

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

Indications for provisional coverage include:

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

Prefabricated temporary crowns:

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

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

Provisional crowns are commonly cemented with _____ cement.

Home care instructions for a patient with provisional coverage include:

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

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

The two types of provisional coverage include _____ and _____.

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

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.

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

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

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

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

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.

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

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

The two types of provisional coverage include _ and _.