Question 1

Brushing and flossing are not daily requirements when fixed restorations are placed.

Accepted Answer

Brushing and flossing are still required when fixed restorations such as bridges or crowns are placed in order to maintain good oral health and prevent decay or gum disease.

Question 2

A retraction cord that is packed vertically to expose the prepared margin is sufficient for the bulk of impression material to flow around the margin.

Accepted Answer

This statement is true. A retraction cord that is packed vertically around the prepared margin can help to expose the margin and create space for impression material to flow around it. The bulk of the impression material can then be placed over the cord to capture the details of the teeth and gums.

Question 3

A full crown is often called a(n) ____________.

Accepted Answer

A full crown is also known as a full-cast crown because it covers the entire tooth and is made entirely out of metal or ceramic material. Three-quarter crowns, inlays, and veneers only cover a portion of the tooth.

Question 4

The electrosurgery unit cauterizes the tissues as it removes them.

Accepted Answer

The electrosurgery unit uses electric current to remove tissues and cauterize the area to control bleeding.

Question 5

A preparation that involves the mesial, distal, and lingual but leaves the facial intact is for a(n) ____________.

Accepted Answer

A three-quarter crown involves preparation of the mesial, distal, and lingual surfaces but leaves the facial surface intact. Full-cast crowns involve preparation of the entire tooth surface, inlays involve preparation of only the occlusal and proximal surfaces, and veneers involve preparation of the facial surface.

Question 6

Crowns that have veneers are known as ceramometal crowns.

Accepted Answer

Ceramometal crowns, also known as porcelain-fused-to-metal (PFM) crowns, combine a metal base or core with a porcelain veneer to improve aesthetics while maintaining strength.

Question 7

With advances in cosmetic/esthetic dentistry, younger and older generations are making it a priority to do whatever it takes to have the "perfect smile."

Accepted Answer

Advances in cosmetic/esthetic dentistry have made it easier for people of all ages to achieve their desired smile, leading to more individuals prioritizing their dental aesthetics.

Question 8

The laboratory technician works closely with the dentist to give the patient a quality restoration.

Accepted Answer

The laboratory technician is responsible for creating custom restorations (such as crowns, bridges, and dentures) based on the dentist's specifications and the patient's needs. The technician uses various dental materials and equipment to ensure a high-quality result, which is then delivered to the dentist for placement in the patient's mouth. As such, the technician plays a critical role in the dental team and works closely with the dentist to ensure patient satisfaction.

Question 9

Use of a CAD/CAM system allows the dentist to take digital impressions and design the restoration right in the office without sending anything out to a lab.

Accepted Answer

A CAD/CAM system allows for in-office digital impressions and design, eliminating the need to send anything to a lab.

Question 10

Which type of restoration covers the area between the cusps in the middle of the tooth?

Accepted Answer

Inlays are restorations that cover the area between the cusps in the middle of the tooth, while onlays and three-quarter crowns cover more of the tooth structure. Veneers are thin shells that cover only the front surface of a tooth. Therefore, the best choice for this scenario is an inlay.

Question 11

The chlorhexidine gluconate rinses are safe for dental implant patients.

Accepted Answer

Chlorhexidine gluconate rinses are commonly recommended for use by dental implants patients to prevent infection and maintain oral hygiene. Although prolonged and excessive use of these rinses can lead to staining of the teeth and implants, they are generally considered safe and effective when used as directed.

Question 12

Indirect restorations are placed directly in the mouth after the tooth has been prepared.

Accepted Answer

Indirect restorations are fabricated outside of the patient's mouth and then placed in the mouth after the tooth has been prepared. Examples include crowns, bridges, inlays, and onlays. Direct restorations, on the other hand, are placed directly into the cavity preparation in the mouth and are typically made of composite resin or amalgam. Examples include fillings and direct veneers.

Question 13

The retraction cord is left in place during the impression.

Accepted Answer

The retraction cord is typically removed before taking the impression to ensure that the impression material can accurately capture the gingival margin and tooth structure without interference.

Question 14

Temporary coverage is not necessary for veneers.

Accepted Answer

Temporary coverage is not necessary for veneers as they are permanently bonded to the teeth.

Question 15

When selecting the shade for a porcelain crown or a veneer, it is best to select the proper shade after the tooth has been prepared.

Accepted Answer

The shade for a porcelain crown or veneer is best selected before the tooth is prepared, as preparation can alter the tooth's natural color and affect the accuracy of the shade match.

Question 16

The chlorhexidine gluconate rinses aid in the fibroblast attachment to the implant surface.

Accepted Answer

Chlorhexidine gluconate rinses have been shown to enhance fibroblast attachment to implant surfaces, and are frequently used as part of implant maintenance protocols.

Question 17

Which type of restoration covers the area to include the cusp ridges and the middle of the tooth?

Accepted Answer

An onlay restoration covers the entire occlusal (biting) surface of a tooth, including the cusp ridges and sometimes extending down the sides. Inlays cover only the central portion of the occlusal surface, while three-quarter crowns cover most of the tooth but leave the facial aspect exposed. Veneers are thin shells that cover only the front surface of a tooth.

Question 18

In prosthodontics, the restoration is termed the ____________.

Accepted Answer

In prosthodontics, the restoration that replaces missing teeth or parts of teeth is called a prosthesis. The pontic is the part of the prosthesis that replaces the missing tooth, the abutment is the remaining tooth structure or dental implant that supports the prosthesis, and an implant is a device that is placed in the jawbone to support a prosthesis.

Question 19

How are fixed prosthodontic restorations held in place?

Accepted Answer

Fixed prosthodontic restorations, such as crowns and bridges, are typically held in place with permanent cementation. This allows for a strong and durable bond between the restoration and the tooth, while still allowing for easy removal by a dental professional if necessary. Mechanical retention, such as using pins or screws, is sometimes used but is less common than cementation. Temporary cementation may be used during the fitting process but is not a permanent solution.

Question 20

Tooth-colored cast restorations are made of porcelain or resins.

Accepted Answer

Tooth-colored cast restorations are commonly made of porcelain or composite resins.

Quiz 33: Fixed Prosthodontics and Gingival Retraction