Exam (elaborations)
Dental Materials Foundations And Applications 11th Edition by Powers - Test Bank
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,Chapter 01: Introduction to Restorative Dental MaterialsPowers: 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
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
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.
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
2. Caries is most likely to occur on which of the following tooth surfaces?
a. Buccal
b. Lingual
c. Occlusal
d. Interproximal
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.
, 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
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.
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.
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
4. What is the process called where decay is removed from the tooth in order for a restoration to
be placed?
a. Cavity preparation
b. Convenience form
c. Margination
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
, 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
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
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
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
c. Porcelain jacket crown
d. A, B, and C
e. A and C
ANS: D
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
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