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Dental Materials Properties And Manipulation 10th Edition by John M. Powers - Test Bank
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, Powers: Dental Materials, 10th EditionChapter 01: Introduction to Restorative Dental Materials
Test Bank
MULTIPLE CHOICE
1. Caries is caused by:
A. food debris.
B. materia alba.
C. bacterial plaque.
D. salivary glycoproteins.
E. acidic foodstuff.
ANS: C
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 Caries is caused by bacterial plaque.
D Salivary glycoproteins form the acquired enamel pellicle to which bacteria
adhere.
E Acidic foodstuff lowers pH and may demineralize teeth but does not directly
cause decay.
REF: Pg. 1
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
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.
Copyright © 2013, 2008 by Mosby, Inc., an affiliate of Elsevier Inc.
, Test Bank 1-2
E Caries is most likely to occur in pits and fissures on the occlusal surface and on
interproximal tooth surfaces where plaque accumulates unchecked.
REF: Pg. 1
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. Occlusal amalgam on tooth number 14
D. Ceramic onlay on tooth number 30
ANS: C
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 An occlusal amalgam 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.
D The alternate choices are all extracoronal restorations used to repair the external.
REF: Pg. 2
4. The process by which a tooth is prepared to receive a restoration is called:
A. convenience form.
B. cavity preparation.
C. extension.
D. margination.
ANS: B
Feedback
A Convenience form is a term describing the nature of the cavity preparation.
B 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.
C Extension is a term describing the nature of the cavity preparation.
D Margination is the procedure for finishing the margins of a restoration.
REF: Pg. 4
5. Which of the following is an example of an extracoronal (direct) restoration?
A. Laboratory-cured composite
B. Dental amalgam
C. Ceramic veneer
D. Cast crown
Copyright © 2013, 2008 by Mosby, Inc., an affiliate of Elsevier Inc.
, Test Bank 1-3
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.
REF: Pg. 4
6. Which of the following is(are) examples of indirect restorations?
A. Ceramic inlay
B. All-ceramic crown
C. Ceramic-alloy 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.
REF: Pg. 4
7. Which of the following is an example of an extracoronal restoration?
A. Disto-occlusal ceramic inlay on tooth number 29
B. Mesio-occlusal gold onlay on tooth number 15
C. Mesio-occlusal amalgam on tooth number 13
D. Occlusal ceramic inlay on tooth number 31
ANS: B
Copyright © 2013, 2008 by Mosby, Inc., an affiliate of Elsevier Inc.
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