Question 1

The failure of a ceramic-alloy bond is commonly due to:

Accepted Answer

A)  an inadequate oxide layer. 
B)  formation of an oxide layer that is too thick. 
C)  failure within the ceramic layer itself. 
D)  failure within the alloy casting. 
A)  an inadequate oxide layer. 
B)  formation of an oxide layer that is too thick. 
C)  failure within the ceramic layer itself. 
D)  failure within the alloy casting.

Question 2

When contrasting ceramic inlays and composite to esthetically restore small posterior lesions:

Accepted Answer

A)  ceramic inlays use a less aggressive tooth preparation. 
B)  ceramic inlays require more manipulation of materials by the practitioner. 
C)  composites require more chair time. 
D)  composites are less customizable in terms of shade, shape, and restoration design. 
A)  ceramic inlays use a less aggressive tooth preparation. 
B)  ceramic inlays require more manipulation of materials by the practitioner. 
C)  composites require more chair time. 
D)  composites are less customizable in terms of shade, shape, and restoration design.

Question 3

Which of the following are limitations of all-ceramic restorations when contrasted with ceramic-alloy restorations?

Accepted Answer

A)  They will fracture in service more often than ceramic-alloy restorations. 
B)  All-ceramic restorations require the removal of more tooth structure than ceramic-alloy restorations. 
C)  The fit of many all-ceramic restorations is not as precise as their ceramic-alloy counterparts. 
D)  A, B, and C are all limitations. 
E)  A and C and both limitations. 
A)  They will fracture in service more often than ceramic-alloy restorations. 
B)  All-ceramic restorations require the removal of more tooth structure than ceramic-alloy restorations. 
C)  The fit of many all-ceramic restorations is not as precise as their ceramic-alloy counterparts. 
D)  A, B, and C are all limitations. 
E)  A and C and both limitations.

Question 4

During fabrication of a ceramic-alloy restoration,the alloy substructure is degassed in a ceramic oven to:

Accepted Answer

A)  remove organic impurities from the alloy surface. 
B)  remove hydrogen cyanide gas formed during the metal casting process. 
C)  promote the formation of an oxide layer on the alloy. 
D)  do A, B, and C. 
E)  do both A and C. 
A)  remove organic impurities from the alloy surface. 
B)  remove hydrogen cyanide gas formed during the metal casting process. 
C)  promote the formation of an oxide layer on the alloy. 
D)  do A, B, and C. 
E)  do both A and C.

Question 5

Ceramics exhibit extremely _____ compressive strengths and moduli,but relatively _____ tensile strengths and elongation.

Accepted Answer

A)  low; low 
B)  low; high 
C)  high; low 
D)  high; high 
A)  low; low 
B)  low; high 
C)  high; low 
D)  high; high

Question 6

Ceramic inlays are generally cemented using _____ cements.

Accepted Answer

A)  zinc polycarboxylate 
B)  zinc phosphate 
C)  zinc oxide-eugenol 
D)  resin-based 
A)  zinc polycarboxylate 
B)  zinc phosphate 
C)  zinc oxide-eugenol 
D)  resin-based

Question 7

The decision to use an all-ceramic restoration is most controversial for:

Accepted Answer

A)  anterior crowns. 
B)  anterior bridges. 
C)  posterior crowns. 
D)  posterior bridges. 
A)  anterior crowns. 
B)  anterior bridges. 
C)  posterior crowns. 
D)  posterior bridges.

Question 8

Which type of ceramic is applied to the ceramic-alloy restoration in order to hide the color of the alloy?

Accepted Answer

A)  Opaque 
B)  Gingival 
C)  Incisal 
D)  Body 
E)  Glaze 
A)  Opaque 
B)  Gingival 
C)  Incisal 
D)  Body 
E)  Glaze

Question 9

Techniques used to form the final dental restoration include:

Accepted Answer

A)  stacking. 
B)  machining. 
C)  condensing. 
D)  all of the above. 
E)  only A and B. 
A)  stacking. 
B)  machining. 
C)  condensing. 
D)  all of the above. 
E)  only A and B.

Question 10

The ceramic should have a coefficient of thermal expansion _____ than that of the alloy in most cases.

Accepted Answer

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

Question 11

Which of the following statements is true regarding the color of ceramics?

Accepted Answer

A)  Hue is the intensity of the color. 
B)  Value is the basic shade of the color. 
C)  Chroma is the amount of lightness or darkness. 
D)  A low chroma indicates grayness. 
A)  Hue is the intensity of the color. 
B)  Value is the basic shade of the color. 
C)  Chroma is the amount of lightness or darkness. 
D)  A low chroma indicates grayness.

Question 12

Which of the following is the most common application of ceramics in dentistry today?

Accepted Answer

A)  Denture teeth 
B)  Porcelain-jacket restorations 
C)  Ceramic-alloy restorations 
D)  All-ceramic restorations 
A)  Denture teeth 
B)  Porcelain-jacket restorations 
C)  Ceramic-alloy restorations 
D)  All-ceramic restorations

Question 13

Veneers are bonded to the tooth using _____ cements and acid-etching techniques.

Accepted Answer

A)  resin-based. 
B)  shade-controlled. 
C)  light-activated. 
D)  A, B, and C. 
E)  A and C. 
A)  resin-based. 
B)  shade-controlled. 
C)  light-activated. 
D)  A, B, and C. 
E)  A and C.

Question 14

A high flexural strength suggests that a ceramic will:

Accepted Answer

A)  better resist fracture. 
B)  be susceptible to fracture. 
C)  have a low clinical survival rate. 
D)  only A and C. 
E)  only B and C. 
A)  better resist fracture. 
B)  be susceptible to fracture. 
C)  have a low clinical survival rate. 
D)  only A and C. 
E)  only B and C.

Question 15

High-fusing types of dental ceramics are used to:

Accepted Answer

A)  fabricate porcelain-jacket crowns. 
B)  fabricate some all-ceramic restorations. 
C)  make ceramic-alloy restorations. 
D)  make some all-ceramic restorations. 
E)  make denture teeth. 
A)  fabricate porcelain-jacket crowns. 
B)  fabricate some all-ceramic restorations. 
C)  make ceramic-alloy restorations. 
D)  make some all-ceramic restorations. 
E)  make denture teeth.

Question 16

Which material is used intraorally to repair fractured ceramic restorations?

Accepted Answer

A)  Ceramic 
B)  Resin composite 
C)  Hybrid ionomer 
D)  Methyl methacrylate 
A)  Ceramic 
B)  Resin composite 
C)  Hybrid ionomer 
D)  Methyl methacrylate

Question 17

Ceramics are fired using a technique called:

Accepted Answer

A)  quenching. 
B)  casting. 
C)  sintering. 
D)  pickling. 
A)  quenching. 
B)  casting. 
C)  sintering. 
D)  pickling.

Question 18

The coefficient of thermal expansion is important when a ceramic is bonded to an alloy because:

Accepted Answer

A)  ceramic offers thermal insulation. 
B)  it improves restoration hardness. 
C)  the expansion and contraction must be matched. 
D)  all of the above. 
E)  only A and C. 
A)  ceramic offers thermal insulation. 
B)  it improves restoration hardness. 
C)  the expansion and contraction must be matched. 
D)  all of the above. 
E)  only A and C.

The failure of a ceramic-alloy bond is commonly due to:

When contrasting ceramic inlays and composite to esthetically restore small posterior lesions:

Which of the following are limitations of all-ceramic restorations when contrasted with ceramic-alloy restorations?

During fabrication of a ceramic-alloy restoration,the alloy substructure is degassed in a ceramic oven to:

Ceramics exhibit extremely _ compressive strengths and moduli,but relatively _ tensile strengths and elongation.

Ceramic inlays are generally cemented using _____ cements.

The decision to use an all-ceramic restoration is most controversial for:

Which type of ceramic is applied to the ceramic-alloy restoration in order to hide the color of the alloy?

Techniques used to form the final dental restoration include:

The ceramic should have a coefficient of thermal expansion _____ than that of the alloy in most cases.

Which of the following statements is true regarding the color of ceramics?

Which of the following is the most common application of ceramics in dentistry today?

Veneers are bonded to the tooth using _____ cements and acid-etching techniques.

A high flexural strength suggests that a ceramic will:

High-fusing types of dental ceramics are used to:

Which material is used intraorally to repair fractured ceramic restorations?

Ceramics are fired using a technique called:

The coefficient of thermal expansion is important when a ceramic is bonded to an alloy because:

Introduction to Restorative Dental Materials

Properties of Materials

Preventive Dental Materials

Direct Esthetic Restorative Materials

Dental Amalgam

Finishing, polishing, and Cleansing Materials

Cements

Impression Materials

Model and Die Materials

Waxes

Casting Alloys, wrought Alloys, and Solders

Casting and Soldering

Polymers in Prosthodontics

Dental Implants

Filters

Exam 14: Dental Ceramics

The failure of a ceramic-alloy bond is commonly due to:

When contrasting ceramic inlays and composite to esthetically restore small posterior lesions:

Which of the following are limitations of all-ceramic restorations when contrasted with ceramic-alloy restorations?

During fabrication of a ceramic-alloy restoration,the alloy substructure is degassed in a ceramic oven to:

Ceramics exhibit extremely _____ compressive strengths and moduli,but relatively _____ tensile strengths and elongation.

Ceramic inlays are generally cemented using _____ cements.

The decision to use an all-ceramic restoration is most controversial for:

Which type of ceramic is applied to the ceramic-alloy restoration in order to hide the color of the alloy?

Techniques used to form the final dental restoration include:

The ceramic should have a coefficient of thermal expansion _____ than that of the alloy in most cases.

Which of the following statements is true regarding the color of ceramics?

Which of the following is the most common application of ceramics in dentistry today?

Veneers are bonded to the tooth using _____ cements and acid-etching techniques.

A high flexural strength suggests that a ceramic will:

High-fusing types of dental ceramics are used to:

Which material is used intraorally to repair fractured ceramic restorations?

Ceramics are fired using a technique called:

The coefficient of thermal expansion is important when a ceramic is bonded to an alloy because:

Introduction to Restorative Dental Materials

Properties of Materials

Preventive Dental Materials

Direct Esthetic Restorative Materials

Dental Amalgam

Finishing, polishing, and Cleansing Materials

Cements

Impression Materials

Model and Die Materials

Waxes

Casting Alloys, wrought Alloys, and Solders

Casting and Soldering

Polymers in Prosthodontics

Dental Implants

Filters

Ceramics exhibit extremely _ compressive strengths and moduli,but relatively _ tensile strengths and elongation.