Deck 29: Stain Management and Tooth Whitening

Question 1

Extrinsic (exogenous) stains can be removed by rubber-cup polishing. Intrinsic (endogenous) stains cannot be removed by rubber-cup polishing but can be removed by air polishing.

A) Both statements are true.
B) Both statements are false.
C) The first statement is true, and the second statement is false.
D) The first statement is false, and the second statement is true.

Answer 1

The first statement is true, and the second statement is false.

Question 2

The most common side effect resulting from home-use bleaching trays is which of the following?

A) A sore throat
B) Demineralization
C) Thermal sensitivity
D) Headaches

Answer 2

Thermal sensitivity

Question 3

Specially developed prophylaxis paste marketed to restore the original luster to veneer, composite, gold, and porcelain restorations contains which key abrasive agent?

A) Microfine arginine bicarbonate particles
B) Microfine calcium phosphate particles
C) Microfine diamond particles
D) Microfine white sapphire particles

Answer 3

Microfine white sapphire particles

Question 4

All of the following are recommended during air polishing to increase safety of the procedure except:

A) high-speed evacuation.
B) preprocedural antimicrobial rinse.
C) mint-flavored powder.
D) removal of the client's contact lenses.

Question 5

Five key variables affect tooth structure loss during extrinsic tooth stain removal with a rubber cup: abrasiveness of the prophylaxis paste, quantity of abrasive agent, contact time of the rubber cup on the tooth surface, speed of the rubber cup, and pressure or force applied to the rubber cup. To preserve tooth structure and prevent damage to teeth and restorative materials, the practitioner starts with the least abrasive agent and amount of agent, with the least amount of rubber cup contact time, and with the least amount of pressure to remove the extrinsic stain.

A) Both statements are true.
B) Both statements are false.
C) The first statement is true, and the second statement is false.
D) The first statement is false, and the second statement is true.

Question 6

Restorative procedures, such as veneers or composite bonding, achieve a better aesthetic result for clients with tetracycline-stained teeth because gray-blue stains are resistant to tooth bleaching.

A) Both the statement and the reason are correct, and they are related.
B) Both the statement and the reason are correct, but they are not related.
C) The statement is correct, but the reason is not.
D) The statement is not correct, but the reason is correct.
E) Neither the statement nor the reason is correct.

Question 7

The primary objective of tooth polishing is to do which of the following?

A) Prepare teeth for the maximum uptake of fluoride.
B) Eliminate oral biofilm so the client can experience smooth enamel.
C) Loosen all soft calculus remaining after scaling.
D) Remove the extrinsic stain remaining after scaling.
E) Help the patient maintain good oral biofilm control.

Question 8

All of the following client conditions contraindicate tooth bleaching except:

A) hypertension.
B) pregnancy.
C) nursing mothers.
D) enamel cracks.

Question 9

All of the following systemic client conditions contraindicate the use of air polishing except:

A) hypoglycemia.
B) emphysema.
C) active tuberculosis.
D) asthma.

Question 10

All of the following are contraindications for rubber-cup polishing except:

A) recession.
B) primary teeth.
C) carious lesions.
D) brown stain.
E) demineralization.

Question 11

When rubber-cup polishing procedures are treatment planned, antibiotic premedication for clients with the highest risk of adverse outcomes for infective endocarditis is recommended because bleeding may occur during polishing.

A) Both the statement and the reason are correct, and they are related.
B) Both the statement and the reason are correct, but they are not related.
C) The statement is correct, but the reason is not.
D) The statement is not correct, but the reason is correct.
E) Neither the statement nor the reason is correct.

Question 12

When running late on the client appointment schedule, the dental hygienist can use a fluoride-containing prophylaxis paste instead of a professionally applied fluoride gel treatment for a client at moderate risk for caries. Fluoride-containing prophylaxis paste has been shown to deliver 4000 to 20,000 ppm fluoride to the teeth when used properly.

A) Both the statement and reason are correct, and they are related.
B) Both the statement and reason are correct, but they are not related.
C) The statement is correct, but the reason is not.
D) The statement is not correct, but the reason is correct.
E) Neither the statement nor the reason is correct.

Question 13

The reason for using intermittent pressure when polishing is to do which of the following?

A) Allow proper adaptation of the rubber cup.
B) Increase extrinsic stain removal potential.
C) Enhance polishability of the paste.
D) Reduce frictional heat.
E) Reduce operator fatigue.

Question 14

Prophylaxis pastes containing casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) are contraindicated for use on people who have which of the following?

A) White spot lesions
B) Dentinal hypersensitivity
C) Allergy to casein
D) Lactose intolerance

Question 15

All of the following bleaching agents are contraindicated for use in home-bleaching trays except:

A) 8.6% sodium perborate.
B) 10.0% carbamide peroxide.
C) 35.0% hydrogen peroxide.
D) 25.0% sodium hypochlorite.

Question 16

Indications for selective polishing include the presence of which of the following?

A) Slightly stained deposits of light supragingival calculus
B) Darkening of the enamel from pulpal necrosis
C) Light brown stain caused by cigarette smoking
D) Brown stain from excess fluoride during tooth development

Question 17

All of the following are contraindicated when teeth are polished with a rubber cup and prophylaxis paste except:

A) rapid speed.
B) coarse paste.
C) air-polishing agents.
D) heavy pressure.
E) wet field.

Question 18

All of the following oral conditions contraindicate the use of air polishing with aluminum trihydroxide air-polishing powder except:

A) composites.
B) recession.
C) glass ionomer restorations.
D) porcelain veneers.
E) intact enamel.

Question 19

Intact enamel surfaces are not damaged when extrinsic stain removal is accomplished with the air polisher. However, prolonged use of air polishing on cementum and dentin can remove significant tooth structure and should be avoided.

A) Both statements are true.
B) Both statements are false.
C) The first statement is true, and the second statement is false.
D) The first statement is false, and the second statement is true.

Question 20

A fluoride polishing paste replenishes the fluoride that is lost from the enamel during mechanical polishing. It is not necessary to provide the client with a professionally applied topical fluoride treatment when a fluoride prophylaxis paste is used.

A) Both statements are true.
B) Both statements are false.
C) The first statement is true, and the second statement is false.
D) The first statement is false, and the second statement is true.

Question 21

Aerosols are generated with sonic and ultrasonic instrumentations. Aerosols can be effectively minimized with the use of a saliva ejector.

A) Both statements are true.
B) Both statements are false.
C) The first statement is true, and the second statement is false.
D) The first statement is false, and the second statement is true.