Test Bank for Dental Materials: Foundations and Applications 11th Edition by John M. Powers, John C. Wataha

Dental materials foundations and
applications
11th edition by Powers
Chapter 1 to 15




TEST BANK

,TABLE OF CONTENT

NEW! The Nature of Dental Materials
1.Introduction to Restorative Dental Materials
2.Properties of Dental Materials
3.Preventive Dental Materials
4.Direct Esthetic Restorative Materials
5.Dental Amalgam
6.Finishing, Polishing, and Cleansing Materials
7.Cements
8.Impression Materials
9.Model and Die Materials
10.Waxes
11.Casting Alloys, Wrought Alloys, and Solders
12.Casting, Soldering, and Welding
13.Polymers in Prosthodontics
14. Dental Ceramics
15.Dental Implants

,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
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