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Chapter 01: Introduction to Restorative Dental Materials
Powers: Dental Materials, 11th Edition
MULTIPLE CHOICE
1. What causes caries?
a. Food debris
b. Materia alba
c. Acidic foodstuff
d. Bacterial plaque
e. Salivary glycoproteins
ANS: D
Feedback
M
A Food debris does not have the structural organization of bacterial plaque
biofilm.
B Materia alba does not have the structural organization of bacterial plaque
ED
biofilm.
C Acidic foodstuff lowers pH and may demineralize teeth but does not directly
cause decay.
D Caries is caused by biofilm; also known as bacterial plaque.
E Salivary glycoproteins form the acquired enamel pellicle to which bacteria
adhere.
ST
DIF: Knowledge REF: p. 1 OBJ: 2
TOP: CDA, GC, V, A,1b. Patient Education and Oral Health Management
MSC: NBDHE, 6.0 Providing Supportive Treatment Services, 6.1 Properties and Manipulation of
Materials
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2. Caries is most likely to occur on which of the following tooth surfaces?
a. Buccal
D
b. Lingual
c. Occlusal
d. Interproximal
Y
e. C and D are both correct.
ANS: E
Feedback
A Buccal surfaces are also susceptible to caries; however, there is less surface area
left unchecked.
B Lingual surfaces are also susceptible to caries; however, there is less surface
area left unchecked.
C Caries is most likely to occur in pits and fissures on the occlusal surface and on
interproximal tooth surfaces where plaque accumulates unchecked.
D Caries is most likely to occur in pits and fissures on the occlusal surface and on
interproximal tooth surfaces where plaque accumulates unchecked.
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E Caries is most likely to occur in pits and fissures on the occlusal surface and on
interproximal tooth surfaces where plaque accumulates unchecked.
DIF: Knowledge REF: p. 1 OBJ: 2
TOP: CDA, GC, III, B, 1, Describe how to prepare, mix, deliver, and store restorative materials,
including but not limited to a. amalgam, c. composites
MSC: NBDHE, 6.0 Providing Supportive Treatment Services, 6.5 General
3. Which of the following is an intracoronal restoration?
a. Ceramic–alloy crown on tooth number 21
b. Ceramic veneer on tooth number 8
c. Ceramic onlay on tooth number 30
d. Ceramic inlay on tooth number 14
ANS: D
M
Feedback
A The alternate choices are all extracoronal restorations used to repair the external.
B The alternate choices are all extracoronal restorations used to repair the external.
ED
C The alternate choices are all extracoronal restorations used to repair the external.
D A ceramic inlay on tooth number 14 is an example of an intracoronal restoration,
meaning that the restoration is being used to repair damage restricted to the
internal parts of a tooth. Materials such as amalgam and composite resin are
used in addition to ceramic or cast metal.
ST
DIF: Knowledge REF: p. 4 OBJ: 3
TOP: CDA, GC, III, B, 1, Describe how to prepare, mix, deliver, and store restorative materials,
including but not limited to a. amalgam, c. composites
MSC: NBDHE, 6.0 Providing Supportive Treatment Services, 6.5 General
U
4. What is the process called where decay is removed from the tooth in order for a restoration to
be placed?
D
a. Cavity preparation
b. Convenience form
c. Margination
Y
d. Extension
ANS: A
Feedback
A The process is referred to as cavity preparation. Cavity preparation is used to
remove diseased or damaged tissue and provide a space accessible for
restoration and one that can stably retain the restoration.
B Convenience form is a term describing the nature of the cavity preparation.
C Extension is a term describing the nature of the cavity preparation.
D Margination is the procedure for finishing the margins of a restoration.
DIF: Knowledge REF: p. 4 OBJ: 2
, MEDSTUDY.COM
TOP: CDA, GC, III.B.1. Describe how to prepare, mix, deliver, and store restorative materials
MSC: NBDHE, 6.0 Providing Supportive Treatment Services, 6.5 General
5. Which of the following is an example of an intracoronal (direct) restoration?
a. Laboratory-cured composite
b. Dental amalgam
c. Ceramic veneer
d. Cast crown
ANS: B
Feedback
A Laboratory-cured composite is a restoration that is constructed away from the
patient in the dental laboratory.
B Dental amalgam is an example of a direct restoration. All of the other
restorations are prepared away from the tooth and then cemented or bonded to
M
the tooth using a procedure that is independent of the manufacturer of the
restoration.
C Ceramic veneer is a restoration that is constructed away from the patient in the
ED
dental laboratory.
D Cast crown is a restoration that is constructed away from the patient in the
dental laboratory.
DIF: Knowledge REF: p. 4 OBJ: 3
ST
TOP: CDA, GC, III.B.1. Describe how to prepare, mix, deliver, and store restorative materials
MSC: NBDHE, 6.0 Providing Supportive Treatment Services, 6.5 General
6. Which of the following is an example of an extracoronal restoration? Choose all that apply.
a. Ceramic inlay
b. Ceramic–alloy crown
U
c. Porcelain jacket crown
d. A, B, and C
e. A and C
D
ANS: D
Y
Feedback
A All three restorations involve lab procedures and are examples of indirect
restorations.
B All three restorations involve lab procedures and are examples of indirect
restorations.
C All three restorations involve lab procedures and are examples of indirect
restorations.
D All three restorations involve lab procedures and are examples of indirect
restorations.
E All three restorations involve lab procedures and are examples of indirect
restorations.
DIF: Knowledge REF: p. 5 OBJ: 3
D
ST
U
D
Y
,MEDSTUDY.COM
Chapter 01: Introduction to Restorative Dental Materials
Powers: Dental Materials, 11th Edition
MULTIPLE CHOICE
1. What causes caries?
a. Food debris
b. Materia alba
c. Acidic foodstuff
d. Bacterial plaque
e. Salivary glycoproteins
ANS: D
Feedback
M
A Food debris does not have the structural organization of bacterial plaque
biofilm.
B Materia alba does not have the structural organization of bacterial plaque
ED
biofilm.
C Acidic foodstuff lowers pH and may demineralize teeth but does not directly
cause decay.
D Caries is caused by biofilm; also known as bacterial plaque.
E Salivary glycoproteins form the acquired enamel pellicle to which bacteria
adhere.
ST
DIF: Knowledge REF: p. 1 OBJ: 2
TOP: CDA, GC, V, A,1b. Patient Education and Oral Health Management
MSC: NBDHE, 6.0 Providing Supportive Treatment Services, 6.1 Properties and Manipulation of
Materials
U
2. Caries is most likely to occur on which of the following tooth surfaces?
a. Buccal
D
b. Lingual
c. Occlusal
d. Interproximal
Y
e. C and D are both correct.
ANS: E
Feedback
A Buccal surfaces are also susceptible to caries; however, there is less surface area
left unchecked.
B Lingual surfaces are also susceptible to caries; however, there is less surface
area left unchecked.
C Caries is most likely to occur in pits and fissures on the occlusal surface and on
interproximal tooth surfaces where plaque accumulates unchecked.
D Caries is most likely to occur in pits and fissures on the occlusal surface and on
interproximal tooth surfaces where plaque accumulates unchecked.
,MEDSTUDY.COM
E Caries is most likely to occur in pits and fissures on the occlusal surface and on
interproximal tooth surfaces where plaque accumulates unchecked.
DIF: Knowledge REF: p. 1 OBJ: 2
TOP: CDA, GC, III, B, 1, Describe how to prepare, mix, deliver, and store restorative materials,
including but not limited to a. amalgam, c. composites
MSC: NBDHE, 6.0 Providing Supportive Treatment Services, 6.5 General
3. Which of the following is an intracoronal restoration?
a. Ceramic–alloy crown on tooth number 21
b. Ceramic veneer on tooth number 8
c. Ceramic onlay on tooth number 30
d. Ceramic inlay on tooth number 14
ANS: D
M
Feedback
A The alternate choices are all extracoronal restorations used to repair the external.
B The alternate choices are all extracoronal restorations used to repair the external.
ED
C The alternate choices are all extracoronal restorations used to repair the external.
D A ceramic inlay on tooth number 14 is an example of an intracoronal restoration,
meaning that the restoration is being used to repair damage restricted to the
internal parts of a tooth. Materials such as amalgam and composite resin are
used in addition to ceramic or cast metal.
ST
DIF: Knowledge REF: p. 4 OBJ: 3
TOP: CDA, GC, III, B, 1, Describe how to prepare, mix, deliver, and store restorative materials,
including but not limited to a. amalgam, c. composites
MSC: NBDHE, 6.0 Providing Supportive Treatment Services, 6.5 General
U
4. What is the process called where decay is removed from the tooth in order for a restoration to
be placed?
D
a. Cavity preparation
b. Convenience form
c. Margination
Y
d. Extension
ANS: A
Feedback
A The process is referred to as cavity preparation. Cavity preparation is used to
remove diseased or damaged tissue and provide a space accessible for
restoration and one that can stably retain the restoration.
B Convenience form is a term describing the nature of the cavity preparation.
C Extension is a term describing the nature of the cavity preparation.
D Margination is the procedure for finishing the margins of a restoration.
DIF: Knowledge REF: p. 4 OBJ: 2
, MEDSTUDY.COM
TOP: CDA, GC, III.B.1. Describe how to prepare, mix, deliver, and store restorative materials
MSC: NBDHE, 6.0 Providing Supportive Treatment Services, 6.5 General
5. Which of the following is an example of an intracoronal (direct) restoration?
a. Laboratory-cured composite
b. Dental amalgam
c. Ceramic veneer
d. Cast crown
ANS: B
Feedback
A Laboratory-cured composite is a restoration that is constructed away from the
patient in the dental laboratory.
B Dental amalgam is an example of a direct restoration. All of the other
restorations are prepared away from the tooth and then cemented or bonded to
M
the tooth using a procedure that is independent of the manufacturer of the
restoration.
C Ceramic veneer is a restoration that is constructed away from the patient in the
ED
dental laboratory.
D Cast crown is a restoration that is constructed away from the patient in the
dental laboratory.
DIF: Knowledge REF: p. 4 OBJ: 3
ST
TOP: CDA, GC, III.B.1. Describe how to prepare, mix, deliver, and store restorative materials
MSC: NBDHE, 6.0 Providing Supportive Treatment Services, 6.5 General
6. Which of the following is an example of an extracoronal restoration? Choose all that apply.
a. Ceramic inlay
b. Ceramic–alloy crown
U
c. Porcelain jacket crown
d. A, B, and C
e. A and C
D
ANS: D
Y
Feedback
A All three restorations involve lab procedures and are examples of indirect
restorations.
B All three restorations involve lab procedures and are examples of indirect
restorations.
C All three restorations involve lab procedures and are examples of indirect
restorations.
D All three restorations involve lab procedures and are examples of indirect
restorations.
E All three restorations involve lab procedures and are examples of indirect
restorations.
DIF: Knowledge REF: p. 5 OBJ: 3
