Question 1

Which of the following esthetic restorative materials is best suited for Class I posterior restorations?

Accepted Answer

A)  Microfilled 
B)  Microhybrid 
C)  Glass ionomer 
D)  Bulk composite 
A)  Microfilled 
B)  Microhybrid 
C)  Glass ionomer 
D)  Bulk composite

Question 2

Which of the following statements is true of silane in composite materials?

Accepted Answer

A)  Silane forms the dispersed inorganic filler particles. 
B)  Silane forms the dispersed organic filler particles. 
C)  Silane is a coupling agent on the filler particles. 
D)  Silane forms the resin matrix. 
A)  Silane forms the dispersed inorganic filler particles. 
B)  Silane forms the dispersed organic filler particles. 
C)  Silane is a coupling agent on the filler particles. 
D)  Silane forms the resin matrix.

Question 3

Which of the following statements is true of single- and two-paste composites?

Accepted Answer

A)  Single-paste composites are light activated. 
B)  Single-paste composites may be dual cured. 
C)  Compules are a component of two-paste composites. 
D)  An automix syringe is a component of single-paste composites. 
A)  Single-paste composites are light activated. 
B)  Single-paste composites may be dual cured. 
C)  Compules are a component of two-paste composites. 
D)  An automix syringe is a component of single-paste composites.

Question 4

In the event that an esthetic material is required for a direct, posterior, load-bearing restoration, _________ composite is the material of choice.

Accepted Answer

A)  core 
B)  flowable 
C)  packable 
D)  laboratory 
A)  core 
B)  flowable 
C)  packable 
D)  laboratory

Question 5

Which of the following statements is correct when contrasting microhybrid composites with microfilled composites?

Accepted Answer

A)  Microhybrid composites have higher water sorption. 
B)  Microfilled composites have higher compressive strength. 
C)  Microhybrid composites have more polymerization shrinkage. 
D)  Microhybrid composites have a lower elastic modulus in compression. 
E)  Microfilled composites have a higher linear coefficient of thermal expansion. 
A)  Microhybrid composites have higher water sorption. 
B)  Microfilled composites have higher compressive strength. 
C)  Microhybrid composites have more polymerization shrinkage. 
D)  Microhybrid composites have a lower elastic modulus in compression. 
E)  Microfilled composites have a higher linear coefficient of thermal expansion.

Question 6

Compare and contrast microfilled and microhybrid composite resin materials.

Accepted Answer

Microhybrid materials contain blends of

Question 7

What is/are the most likely cause(s) of sensitivity following placement of composite restorations?

Accepted Answer

A)  Induced internal stress 
B)  An occlusal interference 
C)  Microleakage of bacteria 
D)  The use of acid etchant during placement 
E)  Both B and D 
A)  Induced internal stress 
B)  An occlusal interference 
C)  Microleakage of bacteria 
D)  The use of acid etchant during placement 
E)  Both B and D

Question 8

What does the composition of composite resin material consist of?

Accepted Answer

A)  Resin matrix 
B)  Organic filler particles 
C)  Inorganic filler particles 
D)  A and B are correct. 
E)  A and C are correct. 
A)  Resin matrix 
B)  Organic filler particles 
C)  Inorganic filler particles 
D)  A and B are correct. 
E)  A and C are correct.

Question 9

What occurs if bond strength is exceeded and gaps occur at the cavosurface margin?

Accepted Answer

A)  Inadequate cure 
B)  Inadequate etch 
C)  Saliva contamination 
D)  Polymerization shrinkage 
A)  Inadequate cure 
B)  Inadequate etch 
C)  Saliva contamination 
D)  Polymerization shrinkage

Question 10

Why is it important to finish and polish a composite restoration after it is placed?

Accepted Answer

A)  Reduces staining 
B)  Prevents percolation 
C)  Eliminates microleakage 
D)  Maintains good oral hygiene 
A)  Reduces staining 
B)  Prevents percolation 
C)  Eliminates microleakage 
D)  Maintains good oral hygiene

Question 11

Which of the following do compomers contain?

Accepted Answer

A)  Dimethacrylate (Bis-GM
A)  
B)  Urethane dimethacrylate (UDM
A)  oligomers 
C)  Monomers modified by polyacid groups with fluoride-releasing silicate glasses. 
D)  A powder of aluminosilicate glass and a water solution of polymers and copolymers of acrylic acid. 
A)  Dimethacrylate (Bis-GM
A)  
B)  Urethane dimethacrylate (UDM
A)  oligomers 
C)  Monomers modified by polyacid groups with fluoride-releasing silicate glasses. 
D)  A powder of aluminosilicate glass and a water solution of polymers and copolymers of acrylic acid.

Question 12

With _______-generation bond agents, etching and priming are accomplished at the same time, and rinsing is not required.

Accepted Answer

A)  third 
B)  fourth 
C)  fifth 
D)  sixth 
A)  third 
B)  fourth 
C)  fifth 
D)  sixth

Question 13

Which type of setting reaction is utilized by a composite restorative material?

Accepted Answer

A)  Gelation 
B)  Reduction 
C)  Hysteresis 
D)  Polymerization 
A)  Gelation 
B)  Reduction 
C)  Hysteresis 
D)  Polymerization

Question 14

Compomers are recommended for patients with ______________ risk.

Accepted Answer

A)  low caries 
B)  medium caries 
C)  high caries 
D)  any level of 
A)  low caries 
B)  medium caries 
C)  high caries 
D)  any level of

Question 15

A bond strength of _____ MPa is an estimated requirement to prevent marginal gaps as a result of polymerization shrinkage during placement of composite restorations.

Accepted Answer

A)  0.01 
B)  1 
C)  10 
D)  20 
A)  0.01 
B)  1 
C)  10 
D)  20

Question 16

Which type of composite has the smallest filler particle size?

Accepted Answer

A)  Microhybrid 
B)  Microfilled 
C)  Nanofilled 
D)  Packable 
E)  Flowable 
A)  Microhybrid 
B)  Microfilled 
C)  Nanofilled 
D)  Packable 
E)  Flowable

Question 17

Which of the following organic fillers are radiopaque?

Accepted Answer

A)  Lithium aluminum silicate 
B)  Crystalline silica 
C)  Strontium 
D)  A, B, and C are all correct. 
A)  Lithium aluminum silicate 
B)  Crystalline silica 
C)  Strontium 
D)  A, B, and C are all correct.

Question 18

What is/are (an) advantage(s) of placing composite into the plastic tip of a syringe and injecting it into the cavity preparation?

Accepted Answer

A)  Allows the use of large mixes 
B)  Facilitates placement of the material in the areas of retention 
C)  Reduces incorporation of voids into the composite during insertion 
D)  A, B, and C are correct. 
E)  Only B and C are correct. 
A)  Allows the use of large mixes 
B)  Facilitates placement of the material in the areas of retention 
C)  Reduces incorporation of voids into the composite during insertion 
D)  A, B, and C are correct. 
E)  Only B and C are correct.

Question 19

Which of the following statements is correct about flowable composite resins?

Accepted Answer

A)  Are recommended for low-stress-bearing restorations 
B)  Have a high modulus of elasticity 
C)  Have a low modulus of elasticity 
D)  A and B 
E)  A and C 
A)  Are recommended for low-stress-bearing restorations 
B)  Have a high modulus of elasticity 
C)  Have a low modulus of elasticity 
D)  A and B 
E)  A and C

Question 20

Explain the process of polymerization shrinkage of composite resin materials and why it is significant in the life of a restoration.

Accepted Answer

Microhybrid composites shrink less durin

Which of the following esthetic restorative materials is best suited for Class I posterior restorations?

Which of the following statements is true of silane in composite materials?

Which of the following statements is true of single- and two-paste composites?

In the event that an esthetic material is required for a direct, posterior, load-bearing restoration, _________ composite is the material of choice.

Which of the following statements is correct when contrasting microhybrid composites with microfilled composites?

Compare and contrast microfilled and microhybrid composite resin materials.

What is/are the most likely cause(s) of sensitivity following placement of composite restorations?

What does the composition of composite resin material consist of?

What occurs if bond strength is exceeded and gaps occur at the cavosurface margin?

Why is it important to finish and polish a composite restoration after it is placed?

Which of the following do compomers contain?

With _______-generation bond agents, etching and priming are accomplished at the same time, and rinsing is not required.

Which type of setting reaction is utilized by a composite restorative material?

Compomers are recommended for patients with ______________ risk.

A bond strength of _____ MPa is an estimated requirement to prevent marginal gaps as a result of polymerization shrinkage during placement of composite restorations.

Which type of composite has the smallest filler particle size?

Which of the following organic fillers are radiopaque?

What is/are (an) advantage(s) of placing composite into the plastic tip of a syringe and injecting it into the cavity preparation?

Which of the following statements is correct about flowable composite resins?

Explain the process of polymerization shrinkage of composite resin materials and why it is significant in the life of a restoration.

Introduction to Restorative Dental Materials

Properties of Materials

Preventive Dental Materials

Dental Amalgam

Finishing, Polishing, and Cleansing Materials

Cements

Impression Materials

Model and Die Materials

Waxes

Casting Alloys, Wrought Alloys, and Solders

Casting, Soldering, and Welding

Polymers in Prosthodontics

Dental Ceramics

Dental Implants

Filters

Exam 4: Direct Esthetic Restorative Materials

Which of the following esthetic restorative materials is best suited for Class I posterior restorations?

Which of the following statements is true of silane in composite materials?

Which of the following statements is true of single- and two-paste composites?

In the event that an esthetic material is required for a direct, posterior, load-bearing restoration, _________ composite is the material of choice.

Which of the following statements is correct when contrasting microhybrid composites with microfilled composites?

Compare and contrast microfilled and microhybrid composite resin materials.

What is/are the most likely cause(s) of sensitivity following placement of composite restorations?

What does the composition of composite resin material consist of?

What occurs if bond strength is exceeded and gaps occur at the cavosurface margin?

Why is it important to finish and polish a composite restoration after it is placed?

Which of the following do compomers contain?

With _______-generation bond agents, etching and priming are accomplished at the same time, and rinsing is not required.

Which type of setting reaction is utilized by a composite restorative material?

Compomers are recommended for patients with ______________ risk.

A bond strength of _____ MPa is an estimated requirement to prevent marginal gaps as a result of polymerization shrinkage during placement of composite restorations.

Which type of composite has the smallest filler particle size?

Which of the following organic fillers are radiopaque?

What is/are (an) advantage(s) of placing composite into the plastic tip of a syringe and injecting it into the cavity preparation?

Which of the following statements is correct about flowable composite resins?

Explain the process of polymerization shrinkage of composite resin materials and why it is significant in the life of a restoration.

Introduction to Restorative Dental Materials

Properties of Materials

Preventive Dental Materials

Dental Amalgam

Finishing, Polishing, and Cleansing Materials

Cements

Impression Materials

Model and Die Materials

Waxes

Casting Alloys, Wrought Alloys, and Solders

Casting, Soldering, and Welding

Polymers in Prosthodontics

Dental Ceramics

Dental Implants

Filters