Question 1

Which of the following is not a direct esthetic restorative material?

Accepted Answer

A)  Composite 
B)  Ceramic 
C)  Glass ionomer 
D)  Compomer 
A)  Composite 
B)  Ceramic 
C)  Glass ionomer 
D)  Compomer B

Question 2

Bond strength is exceeded and gaps occur at the cavosurface margin as a result of:

Accepted Answer

A)  inadequate cure. 
B)  saliva contamination. 
C)  inadequate etch. 
D)  polymerization shrinkage. 
A)  inadequate cure. 
B)  saliva contamination. 
C)  inadequate etch. 
D)  polymerization shrinkage. D

Question 3

In a visible,light-curing,direct composite system,the light is absorbed by a(n):

Accepted Answer

A)  diketone, which starts the polymerization reaction in the presence of an organic amine. 
B)  diketone, which starts the polymerization reaction in the presence of an organic peroxide initiator. 
C)  organic peroxide initiator and organic amine accelerator. 
D)  organic peroxide initiator alone. 
A)  diketone, which starts the polymerization reaction in the presence of an organic amine. 
B)  diketone, which starts the polymerization reaction in the presence of an organic peroxide initiator. 
C)  organic peroxide initiator and organic amine accelerator. 
D)  organic peroxide initiator alone. A

Question 4

Organic fillers that are radiopaque include:

Accepted Answer

A)  crystalline silica. 
B)  lithium aluminum silicate. 
C)  strontium. 
D)  all of the above. 
A)  crystalline silica. 
B)  lithium aluminum silicate. 
C)  strontium. 
D)  all of the above.

Question 5

Currently acceptable composites for posterior applications require clinical studies demonstrating a loss of surface contour less than _____ µm over a 5-year period.

Accepted Answer

A)  5 
B)  50 
C)  100 
D)  250 
E)  5000 
A)  5 
B)  50 
C)  100 
D)  250 
E)  5000

Question 6

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 7

The smear layer consists of:

Accepted Answer

A)  calcium hydroxide. 
B)  hydroxyapatite and partially denatured collagen. 
C)  etchant. 
D)  primer. 
E)  adhesive. 
A)  calcium hydroxide. 
B)  hydroxyapatite and partially denatured collagen. 
C)  etchant. 
D)  primer. 
E)  adhesive.

Question 8

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 9

Which of the following statements is true regarding composite curing times?

Accepted Answer

A)  Curing times with PAC lights are longer than for QTH or LED lights. 
B)  Microhybrid composites require longer curing times than microfilled composites. 
C)  Darker shades require shorter curing times than lighter shades. 
D)  More opaque composites require longer curing times than more translucent composites. 
A)  Curing times with PAC lights are longer than for QTH or LED lights. 
B)  Microhybrid composites require longer curing times than microfilled composites. 
C)  Darker shades require shorter curing times than lighter shades. 
D)  More opaque composites require longer curing times than more translucent composites.

Question 10

When composites are repaired,the repair bond strength is about ____% of the cohesive strength of the original composite.

Accepted Answer

A)  100 to 120 
B)  80 to 100 
C)  60 to 80 
D)  40 to 60 
E)  20 
A)  100 to 120 
B)  80 to 100 
C)  60 to 80 
D)  40 to 60 
E)  20

Question 11

Flowable composites:

Accepted Answer

A)  are recommended for low-stress-bearing restorations. 
B)  have a low modulus of elasticity. 
C)  have a high modulus of elasticity. 
D)  A and B. 
E)  A and C. 
A)  are recommended for low-stress-bearing restorations. 
B)  have a low modulus of elasticity. 
C)  have a high modulus of elasticity. 
D)  A and B. 
E)  A and C.

Question 12

Postoperative sensitivity can be avoided by:

Accepted Answer

A)  placing smaller layers of material. 
B)  using a low-strength liner. 
C)  using a high-strength base. 
D)  all of the above. 
E)  only A and C. 
A)  placing smaller layers of material. 
B)  using a low-strength liner. 
C)  using a high-strength base. 
D)  all of the above. 
E)  only A and C.

Question 13

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 14

Sensitivity associated with placement of composite restorations has been reported in about ____% of cases.

Accepted Answer

A)  1 
B)  10 
C)  25 
D)  50 
E)  75 
A)  1 
B)  10 
C)  25 
D)  50 
E)  75

Question 15

Which of the following is not true about composite resin materials?

Accepted Answer

A)  Esthetically pleasing 
B)  High fluoride content 
C)  High strength 
D)  High wear resistance 
A)  Esthetically pleasing 
B)  High fluoride content 
C)  High strength 
D)  High wear resistance

Question 16

Glass ionomers are typically reserved for which type of restoration?

Accepted Answer

A)  Cervically eroded areas 
B)  Posterior interproximal lesions 
C)  Anterior interproximal lesions 
D)  Pit and fissure lesions 
A)  Cervically eroded areas 
B)  Posterior interproximal lesions 
C)  Anterior interproximal lesions 
D)  Pit and fissure lesions

Question 17

Advantages of composite provisional materials over acrylic provisional materials include:

Accepted Answer

A)  lower cost. 
B)  doughy stage for easier handling. 
C)  harder, more brittle texture. 
D)  lower heat release during curing. 
A)  lower cost. 
B)  doughy stage for easier handling. 
C)  harder, more brittle texture. 
D)  lower heat release during curing.

Question 18

Composite materials are superior materials for anterior restorations because of:

Accepted Answer

A)  minimal surface erosion. 
B)  minimal degradation in the oral environment. 
C)  resistance to biting forces. 
D)  low rate of recurrent caries. 
A)  minimal surface erosion. 
B)  minimal degradation in the oral environment. 
C)  resistance to biting forces. 
D)  low rate of recurrent caries.

Question 19

The composition of composite resin material consists of:

Accepted Answer

A)  organic filler particles. 
B)  inorganic filler particles. 
C)  resin matrix. 
D)  all of the above. 
E)  only B and C. 
A)  organic filler particles. 
B)  inorganic filler particles. 
C)  resin matrix. 
D)  all of the above. 
E)  only B and C.

Question 20

The polymerization reaction of a self-cure composite resin is initiated by:

Accepted Answer

A)  visible curing light system. 
B)  diketone in the presence of an organic amine. 
C)  organic peroxide initiator. 
D)  dimethacrylate. 
A)  visible curing light system. 
B)  diketone in the presence of an organic amine. 
C)  organic peroxide initiator. 
D)  dimethacrylate.

Which of the following is not a direct esthetic restorative material?

Bond strength is exceeded and gaps occur at the cavosurface margin as a result of:

In a visible,light-curing,direct composite system,the light is absorbed by a(n):

Organic fillers that are radiopaque include:

Currently acceptable composites for posterior applications require clinical studies demonstrating a loss of surface contour less than _____ µm over a 5-year period.

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

The smear layer consists of:

Which type of composite has the smallest filler particle size?

Which of the following statements is true regarding composite curing times?

When composites are repaired,the repair bond strength is about ____% of the cohesive strength of the original composite.

Flowable composites:

Postoperative sensitivity can be avoided by:

Compomers contain:

Sensitivity associated with placement of composite restorations has been reported in about ____% of cases.

Which of the following is not true about composite resin materials?

Glass ionomers are typically reserved for which type of restoration?

Advantages of composite provisional materials over acrylic provisional materials include:

Composite materials are superior materials for anterior restorations because of:

The composition of composite resin material consists of:

The polymerization reaction of a self-cure composite resin is initiated by:

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 and Soldering

Polymers in Prosthodontics

Dental Ceramics

Dental Implants

Filters

Exam 4: Direct Esthetic Restorative Materials

Which of the following is not a direct esthetic restorative material?

Bond strength is exceeded and gaps occur at the cavosurface margin as a result of:

In a visible,light-curing,direct composite system,the light is absorbed by a(n):

Organic fillers that are radiopaque include:

Currently acceptable composites for posterior applications require clinical studies demonstrating a loss of surface contour less than _____ µm over a 5-year period.

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

The smear layer consists of:

Which type of composite has the smallest filler particle size?

Which of the following statements is true regarding composite curing times?

When composites are repaired,the repair bond strength is about ____% of the cohesive strength of the original composite.

Flowable composites:

Postoperative sensitivity can be avoided by:

Compomers contain:

Sensitivity associated with placement of composite restorations has been reported in about ____% of cases.

Which of the following is not true about composite resin materials?

Glass ionomers are typically reserved for which type of restoration?

Advantages of composite provisional materials over acrylic provisional materials include:

Composite materials are superior materials for anterior restorations because of:

The composition of composite resin material consists of:

The polymerization reaction of a self-cure composite resin is initiated by:

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 and Soldering

Polymers in Prosthodontics

Dental Ceramics

Dental Implants

Filters