Test Bank for Dental Materials: Foundations and Applications 11th Edition by Powers John & Wataha John| 9780323316378| All Chapters 1-15|LATEST

,
,Chapter 01: Introduction to Restorative Dental Materials
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Powers: Dental Materials, 11th Edition
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MULTIPLE CHOICE n




1. What causes caries?
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a. Food debris n


b. Materia alba n


c. Acidic foodstuff n


d. Bacterial plaque n


e. Salivary glycoproteins n




ANS: D n




Feedback
A Food debris does not have the structural organization of bacterial plaque
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biofilm.
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B Materia alba does not have the structural organization of bacterial plaque
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biofilm.
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C Acidic foodstuff lowers pH and may demineralize teeth but does not directly
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cause decay.
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D Caries is caused by biofilm; also known as bacterial plaque.
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E Salivary glycoproteins form the acquired enamel pellicle to which bacteria
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adhere.
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DIF: Knowledge REF: p. 1 OBJ: 2 n n n n n n


TOP: CDA, GC, V, A,1b. Patient Education and Oral Health Management
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MSC: NBDHE, 6.0 Providing Supportive Treatment Services, 6.1 Properties and Manipulation of
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Materials
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2. Caries is most likely to occur on which of the following tooth surfaces?
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a. Buccal
b. Lingual
c. Occlusal
d. Interproximal
e. C and D are both correct.
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ANS: E n




Feedback
A Buccal surfaces are also susceptible to caries; however, there is less surface area
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left unchecked.
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B Lingual surfaces are also susceptible to caries; however, there is less surface
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area left unchecked.
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C Caries is most likely to occur in pits and fissures on the occlusal surface and on
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interproximal tooth surfaces where plaque accumulates unchecked.
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D Caries is most likely to occur in pits and fissures on the occlusal surface and on
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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
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interproximal tooth surfaces where plaque accumulates unchecked.
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DIF: Knowledge REF: p. 1 OBJ: 2 n n n n n n


TOP: CDA, GC, III, B, 1, Describe how to prepare, mix, deliver, and store restorative materials,
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including but not limited to a. amalgam, c. composites
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MSC: NBDHE, 6.0 Providing Supportive Treatment Services, 6.5 General
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3. Which of the following is an intracoronal restoration?
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a. Ceramic–alloy crown on tooth number 21 n n n n n


b. Ceramic veneer on tooth number 8 n n n n n


c. Ceramic onlay on tooth number 30 n n n n n


d. Ceramic inlay on tooth number 14 n n n n n




ANS: D n




Feedback
A The alternate choices are all extracoronal restorations used to repair the external.
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B The alternate choices are all extracoronal restorations used to repair the external.
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C The alternate choices are all extracoronal restorations used to repair the external.
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D A ceramic inlay on tooth number 14 is an example of an intracoronal restoration,
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meaning that the restoration is being used to repair damage restricted to the
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internal parts of a tooth. Materials such as amalgam and composite resin are
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used in addition to ceramic or cast metal.
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DIF: Knowledge REF: p. 4 OBJ: 3 n n n n n n


TOP: CDA, GC, III, B, 1, Describe how to prepare, mix, deliver, and store restorative materials,
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including but not limited to a. amalgam, c. composites
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MSC: NBDHE, 6.0 Providing Supportive Treatment Services, 6.5 General
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4. What is the process called where decay is removed from the tooth in order for a restoration to
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nbe placed?
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a. Cavity preparation n


b. Convenience form n


c. Margination
d. Extension
ANS: A n




Feedback
A The process is referred to as cavity preparation. Cavity preparation is used to
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remove diseased or damaged tissue and provide a space accessible for
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restoration and one that can stably retain the restoration.
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B Convenience form is a term describing the nature of the cavity preparation.
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C Extension is a term describing the nature of the cavity preparation.
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D Margination is the procedure for finishing the margins of a restoration.
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DIF: Knowledge REF: n n p. n n 4 OBJ: n n 2