Question 1

Which of the following is a key advantage of low-fusing porcelains?

Accepted Answer

A)  They have an opaque layer. 
B)  They are much stronger. 
C)  They appear opalescent. 
D)  They are less abrasive. 
A)  They have an opaque layer. 
B)  They are much stronger. 
C)  They appear opalescent. 
D)  They are less abrasive. D

Question 2

Silane is a coupling agent that may be added to the _____ surface to enhance the bond and form a chemical union between the porcelain and the resin cement.

Accepted Answer

A)  etched porcelain 
B)  unetched porcelain 
C)  etched resin cement 
D)  unetched resin cement 
A)  etched porcelain 
B)  unetched porcelain 
C)  etched resin cement 
D)  unetched resin cement A

Question 3

Which of the following is true concerning lighting for shade taking?

Accepted Answer

A)  A natural east light is considered a good light for shade taking. 
B)  Fluorescent lights emit more yellow light and incandescent lights emit more blue light. 
C)  Early morning and late afternoon light contains more yellow and orange light and less green and blue. 
D)  The bright light from the dental unit will tend to decrease the perceived brightness of the shade and increase the color intensity. 
A)  A natural east light is considered a good light for shade taking. 
B)  Fluorescent lights emit more yellow light and incandescent lights emit more blue light. 
C)  Early morning and late afternoon light contains more yellow and orange light and less green and blue. 
D)  The bright light from the dental unit will tend to decrease the perceived brightness of the shade and increase the color intensity. C

Question 4

Which of the following is the first layer of porcelain applied to the metal during fabrication of porcelain-metal restorations?

Accepted Answer

A)  Body porcelain 
B)  Incisal porcelain 
C)  Opaque porcelain 
D)  Translucent porcelain 
A)  Body porcelain 
B)  Incisal porcelain 
C)  Opaque porcelain 
D)  Translucent porcelain

Question 5

Pressed ceramic veneers are _____ than feldspathic porcelain veneers and are too _____ for very dark teeth.

Accepted Answer

A)  thinner;translucent 
B)  thinner;opaque 
C)  thicker;translucent 
D)  thicker;opaque 
A)  thinner;translucent 
B)  thinner;opaque 
C)  thicker;translucent 
D)  thicker;opaque

Question 6

A CAD/CAM machined crown uses an optical scanner to do what?

Accepted Answer

A)  Design the prep 
B)  Design the crown 
C)  Make the temporary 
D)  Take the impression 
A)  Design the prep 
B)  Design the crown 
C)  Make the temporary 
D)  Take the impression

Question 7

Describe the different techniques for fabrication of ceramic restorations.

Accepted Answer

•Slip-casting: A process whereby ceramic

Question 8

When a shade match is obtained,the shade tab should be _____ the tooth to be matched.

Accepted Answer

A)  behind 
B)  in front of 
C)  in the same plane as 
D)  outside of the mouth,in contrast to 
A)  behind 
B)  in front of 
C)  in the same plane as 
D)  outside of the mouth,in contrast to

Question 9

The metal in the area of a PFM crown where the porcelain is to be bonded is approximately _____ mm thick.

Accepted Answer

A)  0.01 to 0.03 
B)  0.1 to 0.3 
C)  0.3 to 0.5 
D)  1.0 to 2.0 
A)  0.01 to 0.03 
B)  0.1 to 0.3 
C)  0.3 to 0.5 
D)  1.0 to 2.0

Question 10

Match the items with the correct description below.
-A darker color

Accepted Answer

A) Long wavelength 
B) Short wavelength 
C) High value 
D) Low value 
E) High chroma 
A) Long wavelength 
B) Short wavelength 
C) High value 
D) Low value 
E) High chroma

Question 11

The best arrangement for the coefficient of thermal expansion of the porcelain and the metal to be compatible is for the porcelain to have _____ thermal expansion than the metal.

Accepted Answer

A)  slightly less 
B)  slightly more 
C)  significantly less 
D)  significantly more 
A)  slightly less 
B)  slightly more 
C)  significantly less 
D)  significantly more

Question 12

All-ceramic restorations can be used for which of the following indirect dental restoratives?
1)Inlays
2)Onlays
3)Crowns
4)Veneers

Accepted Answer

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

Question 13

Which of the following is not a characteristic used for taking shades?

Accepted Answer

A)  Translucency 
B)  Chroma 
C)  Value 
D)  Hue 
A)  Translucency 
B)  Chroma 
C)  Value 
D)  Hue

Question 14

What is the temperature range for a medium fusing porcelain?

Accepted Answer

A)  1600° F to 1950° F 
B)  2000° F to 2300° F 
C)  2360° F to 2500° F 
D)  2550° F to 2700° F 
A)  1600° F to 1950° F 
B)  2000° F to 2300° F 
C)  2360° F to 2500° F 
D)  2550° F to 2700° F

Question 15

Which of the following methods for fabrication of ceramic restorations utilizes the lost wax technique similar to that used to cast gold crowns?

Accepted Answer

A)  Sintering 
B)  Slip-casting 
C)  Heat-pressing 
D)  Computer-assisted machining 
A)  Sintering 
B)  Slip-casting 
C)  Heat-pressing 
D)  Computer-assisted machining

Question 16

What is the main advantage of the combination of porcelain and metal for fixed crown and bridge prosthodontics?

Accepted Answer

A)  Direct fabrication of the restoration in the patient's mouth 
B)  Superior esthetics when contrasted with all-porcelain jacket crowns 
C)  The use of high-fusing porcelain for superior bonding to tooth structure 
D)  The strength and durability produced by the bond between a metal internal core and the porcelain covering 
A)  Direct fabrication of the restoration in the patient's mouth 
B)  Superior esthetics when contrasted with all-porcelain jacket crowns 
C)  The use of high-fusing porcelain for superior bonding to tooth structure 
D)  The strength and durability produced by the bond between a metal internal core and the porcelain covering

Question 17

In general,the shade of a tooth should be taken _____ preparation of the tooth and _____ a rubber dam is placed.

Accepted Answer

A)  before;before 
B)  before;after 
C)  after;before 
D)  after;after 
A)  before;before 
B)  before;after 
C)  after;before 
D)  after;after

Question 18

Which of the following is true of computer-aiding machining for crown and bridge techniques?

Accepted Answer

A)  It is available only for fabrication of porcelain veneers. 
B)  No die needs to be poured,and no temporary crown is necessary. 
C)  A porous ceramic core is infiltrated with molten glass by capillary action. 
D)  Ceramic powder is mixed with a water-based liquid to form a mass that is pressed onto a porous refractory die. 
A)  It is available only for fabrication of porcelain veneers. 
B)  No die needs to be poured,and no temporary crown is necessary. 
C)  A porous ceramic core is infiltrated with molten glass by capillary action. 
D)  Ceramic powder is mixed with a water-based liquid to form a mass that is pressed onto a porous refractory die.

Question 19

The metals used as the core for the porcelain-fused-to-metal (PFM)crowns are alloys of specific metals that will form a/an _____ layer as the metal is heated.

Accepted Answer

A)  oxide 
B)  eutectic 
C)  scintillating 
D)  oxygen-inhibited 
A)  oxide 
B)  eutectic 
C)  scintillating 
D)  oxygen-inhibited

Question 20

Which of the following is true concerning matching the shade for ceramic restorations?

Accepted Answer

A)  A composite guide may be used for a ceramic restoration. 
B)  The ideal color for the area in which the shade will be matched is blue. 
C)  Shade tabs should be moistened and individually held adjacent to the teeth to be matched. 
D)  Stare at the color of the shade tab and tooth for several seconds so that the retina can adjust. 
A)  A composite guide may be used for a ceramic restoration. 
B)  The ideal color for the area in which the shade will be matched is blue. 
C)  Shade tabs should be moistened and individually held adjacent to the teeth to be matched. 
D)  Stare at the color of the shade tab and tooth for several seconds so that the retina can adjust.

Which of the following is a key advantage of low-fusing porcelains?

Silane is a coupling agent that may be added to the _____ surface to enhance the bond and form a chemical union between the porcelain and the resin cement.

Which of the following is true concerning lighting for shade taking?

Which of the following is the first layer of porcelain applied to the metal during fabrication of porcelain-metal restorations?

Pressed ceramic veneers are _ than feldspathic porcelain veneers and are too _ for very dark teeth.

A CAD/CAM machined crown uses an optical scanner to do what?

Describe the different techniques for fabrication of ceramic restorations.

When a shade match is obtained,the shade tab should be _____ the tooth to be matched.

The metal in the area of a PFM crown where the porcelain is to be bonded is approximately _____ mm thick.

Match the items with the correct description below. -A darker color

The best arrangement for the coefficient of thermal expansion of the porcelain and the metal to be compatible is for the porcelain to have _____ thermal expansion than the metal.

All-ceramic restorations can be used for which of the following indirect dental restoratives? 1)Inlays 2)Onlays 3)Crowns 4)Veneers

Which of the following is not a characteristic used for taking shades?

What is the temperature range for a medium fusing porcelain?

Which of the following methods for fabrication of ceramic restorations utilizes the lost wax technique similar to that used to cast gold crowns?

What is the main advantage of the combination of porcelain and metal for fixed crown and bridge prosthodontics?

In general,the shade of a tooth should be taken _ preparation of the tooth and _ a rubber dam is placed.

Which of the following is true of computer-aiding machining for crown and bridge techniques?

The metals used as the core for the porcelain-fused-to-metal (PFM)crowns are alloys of specific metals that will form a/an _____ layer as the metal is heated.

Which of the following is true concerning matching the shade for ceramic restorations?

Introduction to Dental Materials

Oral Environment and Patient Considerations

Physical and Mechanical Properties of Dental Materials

General Handling and Safety of Dental Materials in the Dental Office

Principles of Bonding

Composites, glass Ionomers, and Compomers

Preventive and Desensitizing Materials

Teeth Whitening Materials and Procedures

Dental Amalgam

Casting Metals, solders, and Wrought Metal Alloys

Dental Implants

Abrasion, finishing, and Polishing

Dental Cement

Impression Materials

Gypsum and Wax Products

Polymers for Prosthetic Dentistry

Provisional Restorations

Preventive and Corrective Oral Appliances

Filters

Exam 9: Dental Ceramics

Which of the following is a key advantage of low-fusing porcelains?

Silane is a coupling agent that may be added to the _____ surface to enhance the bond and form a chemical union between the porcelain and the resin cement.

Which of the following is true concerning lighting for shade taking?

Which of the following is the first layer of porcelain applied to the metal during fabrication of porcelain-metal restorations?

Pressed ceramic veneers are _____ than feldspathic porcelain veneers and are too _____ for very dark teeth.

A CAD/CAM machined crown uses an optical scanner to do what?

Describe the different techniques for fabrication of ceramic restorations.

When a shade match is obtained,the shade tab should be _____ the tooth to be matched.

The metal in the area of a PFM crown where the porcelain is to be bonded is approximately _____ mm thick.

Match the items with the correct description below. -A darker color

The best arrangement for the coefficient of thermal expansion of the porcelain and the metal to be compatible is for the porcelain to have _____ thermal expansion than the metal.

All-ceramic restorations can be used for which of the following indirect dental restoratives? 1)Inlays 2)Onlays 3)Crowns 4)Veneers

Which of the following is not a characteristic used for taking shades?

What is the temperature range for a medium fusing porcelain?

Which of the following methods for fabrication of ceramic restorations utilizes the lost wax technique similar to that used to cast gold crowns?

What is the main advantage of the combination of porcelain and metal for fixed crown and bridge prosthodontics?

In general,the shade of a tooth should be taken _____ preparation of the tooth and _____ a rubber dam is placed.

Which of the following is true of computer-aiding machining for crown and bridge techniques?

The metals used as the core for the porcelain-fused-to-metal (PFM)crowns are alloys of specific metals that will form a/an _____ layer as the metal is heated.

Which of the following is true concerning matching the shade for ceramic restorations?

Introduction to Dental Materials

Oral Environment and Patient Considerations

Physical and Mechanical Properties of Dental Materials

General Handling and Safety of Dental Materials in the Dental Office

Principles of Bonding

Composites, glass Ionomers, and Compomers

Preventive and Desensitizing Materials

Teeth Whitening Materials and Procedures

Dental Amalgam

Casting Metals, solders, and Wrought Metal Alloys

Dental Implants

Abrasion, finishing, and Polishing

Dental Cement

Impression Materials

Gypsum and Wax Products

Polymers for Prosthetic Dentistry

Provisional Restorations

Preventive and Corrective Oral Appliances

Filters

Pressed ceramic veneers are _ than feldspathic porcelain veneers and are too _ for very dark teeth.

In general,the shade of a tooth should be taken _ preparation of the tooth and _ a rubber dam is placed.