Deck 13: Hygiene-Related Oral Disorders

Question 1

Professionally applied fluoride topical agents last for approximately:

A) 5 to 8 weeks.
B) 12 weeks or 3 months.
C) 26 weeks or 6 months.
D) 52 weeks or 1 year.

Answer 1

5 to 8 weeks.

Question 2

Which of the following statements is true concerning chronic fluoride toxicity?

A) Drinking water with more than 2 ppm of fluoride can lead to fluorosis of tooth enamel during the age of tooth mineralization.
B) Dentinal hypoplasia is the most common sign of chronic fluoride toxicity during tooth development.
C) Color changes in tooth enamel caused by chronic fluoride toxicity are a result of hypermineralization of the outer one third of tooth enamel.
D) Children that drink water with at least 0.6 ppm of fluoride and ingest fluoride supplements are at risk for developing chronic toxicity.

Answer 2

Drinking water with more than 2 ppm of fluoride can lead to fluorosis of tooth enamel during the age of tooth mineralization.

Question 3

Which of the following professionally applied preparations for in-office application has the highest fluoride concentration (ppm)?

A) Sodium 2%
B) Sodium varnish 5%
C) APF 1.23%
D) 0.4% SnF and 1.1% NaF in APF

Answer 3

Sodium varnish 5%

Question 4

Which of the following statements is true of NaF varnish as a professionally applied topical agent?

A) The varnish requires prior oral prophylaxis.
B) The varnish stays on the enamel longer than topical fluoride.
C) The varnish can be applied if saliva is present.
D) Both a and b are true.
E) Both b and c are true.

Question 5

Annual 4-minute in-office topical fluoride applications reduce tooth decay in permanent teeth of children living in nonfluoridated areas by:

A) 6%.
B) 16%.
C) 26%.
D) 36%.

Question 6

Which of the following liquids may be used during management of acute fluoride toxicity?

A) Apple juice
B) Lemonade
C) Milk
D) Coffee

Question 7

Which of the following statements is true concerning guidelines for the proper use of dental floss?

A) The patient should pull out approximately 8 inches of floss from its container.
B) Most of the floss should be wrapped around the middle fingers until approximately 1 inch of floss remains visible.
C) Use a gentle gliding motion and place the floss between two teeth but do not encroach on the gum line.
D) Keep the floss taut and do not let it curve into a C-shaped curve against either tooth that forms the contact.

Question 8

According to the American Dental Association (ADA), which of the following groups of adults should receive professionally applied fluoride products?

A) All adults
B) Only adults with active caries in the last 3 years with risk factors for caries
C) Only adults with active caries in the last 3 years without risk factors for caries
D) Only adults without active caries in the last 3 years without risk factors for caries
E) No adults

Question 9

Fluoride is thought to work by:

A) interacting with mineralized tissue, including bones and teeth.
B) acting on individual microorganisms in biofilm.
C) functioning as an antibiotic.
D) doing both a and b.
E) doing both b and c.

Question 10

The dental hygienist should teach the patient that the best way to ensure healthy teeth and gingival tissues is to remove plaque mechanically by brushing at least twice daily and by _____ at least once a day.

A) rinsing with mouthwash
B) flossing
C) massaging the tissue
D) using a toothpick

Question 11

Which of the following types of topically applied fluoride is recommended for 4-minute topical fluoride application when porcelain or composite restorations are present?

A) Sodium fluoride (NaF)
B) Acidulated phosphate fluoride (APF)
C) SnF
D) Both a and b
E) Both b and c

Question 12

Food _____ are less cariogenic.

A) with lower water content
B) that stimulates saliva flow
C) high in protein
D) Both a and b are correct.
E) Both b and c are correct.

Question 13

The patient is instructed to refrain from eating or drinking for _____ minutes after professionally applied fluoride applications.

A) 4
B) 14
C) 30
D) 60

Question 14

Which of the following statements is true concerning fluoride toxicity?

A) Both acute and chronic toxicity can occur with fluoride use.
B) Acute but not chronic toxicity can occur with fluoride use.
C) Chronic but not acute toxicity can occur with fluoride use.
D) Neither acute nor chronic toxicity can occur with fluoride use.

Question 15

Some topical fluoride products are marketed as 1-minute in-office applications. Clinical trials have proved that they are as effective as the 4-minute applications.

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

Question 16

Experts recommend that the average life of a toothbrush is _____ months.

A) 3
B) 6
C) 12
D) 24

Question 17

The incidence of dental caries in children had decreased from the 1970s until the mid 1990s. This decrease has been attributed to improved oral hygiene.

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

Question 18

Which of the following statements is true of professionally applied NaF varnish?

A) NaF varnish is available in Europe but is not currently available in the United States as a dentin-desensitizing agent and as a cavity liner.
B) The U.S. Food and Drug Administration (FDA)has approved the varnish for its anticaries effect.
C) The use of fluoride varnish for caries prevention has been endorsed by the ADA.
D) NaF varnish is available as a 5% solution.

Question 19

What percentage of adult Americans have untreated tooth decay?

A) 3%
B) 13%
C) 23%
D) 33%

Question 20

Experts recommend that fluoride applications remain in place for:

A) 30 seconds.
B) 1 minute.
C) 2 minutes.
D) 4 minutes.

Question 21

Approximately 40% of the general population has experienced dental caries.

Question 22

Which of the following treatments is the most effective in reducing gingivitis?

A) Sodium 2% fluoride
B) APF 1.23%
C) 0.4% SnF and 1.1% NaF in APF
D) 0.3% triclosan

Question 23

Tooth bleaching can increase the risk for sensitivity.

Question 24

Which of the following agents is added to mouth rinses to function as a foaming agent that helps remove debris?

A) Alcohol
B) Surfactants
C) Glycerin
D) Benzoic acid

Question 25

In a recent clinical trial, an essential oil mouth rinse plus brushing and flossing was:

A) not found to be effective in reducing interproximal bleeding.
B) found to be effective in reducing interproximal pocket depths.
C) found to produce similar results to chlorhexidine at the end of 3 months of therapy.
D) found to produce similar results to chlorhexidine at the end of 6 months of therapy.

Question 26

Dental disorders result in 7 million days of lost work each year.

Question 27

Proteins in dairy products raise pH levels and can inhibit bacterial growth.

Question 28

Which of the following statements is true of the use of chlorhexidine rinse for the treatment of gingivitis?

A) Chlorhexidine is active against gram-positive but not gram-negative bacteria.
B) Chlorhexidine is subject to bacterial resistance.
C) Chlorhexidine binds to the bacterial cell membrane and increases its permeability.
D) Chlorhexidine is used prophylactically.

Question 29

The majority of desensitizing toothpastes contain:

A) NaF.
B) oxalates.
C) adhesives and resins.
D) 5% potassium nitrate.

Question 30

The patient should not eat for _____ after the application of NaF varnish and should not brush his teeth for _____.

A) 30 minutes; 30 minutes
B) 30 minutes; 60 minutes
C) 1 hour; 2 hours
D) 2 hours; 1 day
E) 2 hours; 2 days

Question 31

Guidelines for using at-home topical fluoride preparations include:

A) topical fluoride rinses should be used no more than four times per day.
B) brush teeth with a fluoride dentifrice after rinsing with the at-home topical fluoride preparation.
C) swallow the fluoride rinse for a systemic effect.
D) rinse vigorously for approximately 60 seconds.

Question 32

Patients should rinse with chlorhexidine for 30 seconds with 15 ml of chlorhexidine _____ a day.

A) once
B) twice
C) three times
D) four times

Question 33

Which of the following statements is true of Xylitol?

A) Xylitol has been found to reduce the levels of Streptococcus mutans in saliva but not plaque.
B) Xylitol has been found to inhibit the attachment of biofilm to teeth.
C) Xylitol can prevent the transmission of oral bacteria from mother to child.
D) Both a and b are true.
E) Both b and c are true.

Question 34

Children that drink water with at least 1 ppm of fluoride and ingest fluoride supplements are at risk for developing chronic fluoride toxicity.

Question 35

Which of the following statements is true regarding use of dentifrices in the United States?

A) Nearly 75% of all dentifrices or toothpastes available in the United States contain some form of fluoride, but the remaining 25% of these products do not.
B) Some products contain triclosan 0.3%, as well as fluoride, but these products do not carry ADA approval for claimed effects against gingivitis.
C) Studies have shown that children between the ages of 10 and 15 years who brush three times daily with a fluoride dentifrice showed no reduction in the decayed-missing-filled rate compared with those that only brush once a day.
D) Children should use a pea-sized amount of toothpaste to minimize fluoride ingestion.

Question 36

Patients considered as having a low risk for caries benefit from professionally applied fluoride products.

Question 37

For dentinal hyperalgesia (DH)to develop, the dentin must become exposed through the loss of gingival recession or enamel, and:

A) the dentin tubules must be open to the oral cavity and the pulp.
B) the tooth must be in hyperocclusion.
C) erosion at the cervical must be present.
D) a carious exposure of the tooth pulp must be present.

Question 38

Which of the following choices is the most common cause of intrinsic acid production?

A) Medication
B) Gastric reflux
C) Wine
D) Ciders