Chapter 8 Review Questions Flashcards Preview

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Flashcards in Chapter 8 Review Questions Deck (10)
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1
Q
Whitening of teeth
A. Can cause them to become soft
B. Affects only extrinsic stains
C. Is very predictable
D. Can cause sensitivity of the teeth
A

D.

2
Q

Whitening of teeth works
A. By removing surface stains
B. By penetrating both enamel and dentin and oxidizing the stain
C. By sealing surface porosities so that stain cannot enter the tooth surface
D. By creating a white coating on the surface of the enamel

A

B.

3
Q

In-office whitening
A. Is superior in results to home whitening
B. Produces equivalent results to home whitening but is faster
C. Does not cause tooth sensitivity
D. Has no effect if the whitening agents contacts the gingiva

A

B.

4
Q
The active ingredient in most in-office and OTC whitening products is
A. Sodium bicarbonate
B. Ammonia
C. Phosphoric acid
D. Peroxide
A

D.

5
Q

Which one of the following can remove intrinsic stains?
A. Prophy cup with polishing paste
B. Hydrogen peroxide
C. Air polishing with sodium bicarbonate powder
D. Ultrasonic scaling

A

B.

6
Q
Whitening procedures should be avoided if the patient has any of the following except one. Which one is the exception?
A. Open carious lesions
B. Gingivitis
C. Hypersensitive teeth
D. Inability to give informed concent
A

B.

7
Q
Undesirable outcomes from home tray whitening include all of the following except one. Which one is the exception?
A. Soft tissue irritation
B. Root abrasion
C. Red wine stain
D. Temperature sensitivity
A

B.

8
Q
The most difficult stains to remove are?
A. Coffee stains
B. Chlorhexidine stains
C. Red wine stains
D. Tetracycline stains
A

D.

9
Q

Which one of the following statements about microabrasion is true?
A. It uses 35% phosphoric acid
B. It removes only the discoloration
C. It removes the discoloration and some enamel as well

A

C.

10
Q

Which one of the following statements about whitening strips is true?
A. Strips are less effective than paint-on whitening products
B. Strips are typically worn from 4 to 6 hours at a time
C. Strips interfere with speech
D. Strips are just as effective as home tray whitening with 10 to 15% carbamide peroxide

A

D.