Question 1

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

Accepted Answer

A) True 
 B)False  True

Question 2

What percentage of adult Americans have untreated tooth decay?

Accepted Answer

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

Question 3

Guidelines for using at-home topical fluoride preparations include

Accepted Answer

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. 
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. D

Question 4

Topical NaF 2% is recommended for patients with porcelain or composite restorations.APF 1.23% is not recommended for patients with porcelain or composite restorations.

Accepted Answer

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

Question 5

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

Accepted Answer

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. 
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 6

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

Accepted Answer

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. 
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 7

The FDA has stated that triclosan is effective against

Accepted Answer

A) occlusal caries. 
B) proximal caries. 
C) gingivitis. 
D) periodontitis. 
A) occlusal caries. 
B) proximal caries. 
C) gingivitis. 
D) periodontitis.

Question 8

Almost which percentage of Americans 60 years and older have lost all their teeth?

Accepted Answer

A) 5 
B) 10 
C) 15 
D) 20 
E) 25 
A) 5 
B) 10 
C) 15 
D) 20 
E) 25

Question 9

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

Accepted Answer

A) True 
 B)False

Question 10

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

Accepted Answer

A) True 
 B)False

Question 11

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

Accepted Answer

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

Question 12

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

Accepted Answer

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 US Food and Drug Administration (FD
A) 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. 
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 US Food and Drug Administration (FD
A) 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 13

Which of the following statements is true of Xylitol?

Accepted Answer

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. 
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 14

Which is a bisbiguanide local antiinfective available in a 0.2% mouthrinse?

Accepted Answer

A) Xylitol 
B) Chlorhexidine gluconate 
C) Essential oil 
D) Triclosan 
A) Xylitol 
B) Chlorhexidine gluconate 
C) Essential oil 
D) Triclosan

Question 15

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

Accepted Answer

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

Question 16

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

Accepted Answer

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

Question 17

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

Accepted Answer

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

Question 18

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

Accepted Answer

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

Question 19

Professionally applied NaF varnish is available with a sodium fluoride concentration of

Accepted Answer

A) 1.23% 
B) 1.64% 
C) 2% 
D) 5% 
A) 1.23% 
B) 1.64% 
C) 2% 
D) 5%

Question 20

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

Accepted Answer

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

Exam 26: Hygiene-Related Oral Disorders

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

What percentage of adult Americans have untreated tooth decay?

Guidelines for using at-home topical fluoride preparations include

Topical NaF 2% is recommended for patients with porcelain or composite restorations.APF 1.23% is not recommended for patients with porcelain or composite restorations.

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

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

The FDA has stated that triclosan is effective against

Almost which percentage of Americans 60 years and older have lost all their teeth?

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

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

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

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

Which of the following statements is true of Xylitol?

Which is a bisbiguanide local antiinfective available in a 0.2% mouthrinse?

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

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

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

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

Professionally applied NaF varnish is available with a sodium fluoride concentration of

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

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