Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

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 3

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 4

The majority of desensitizing toothpastes contain:

Accepted Answer

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

Question 5

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

Accepted Answer

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. 
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 6

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

Accepted Answer

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

Question 7

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 8

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 9

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.

Accepted Answer

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. 
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 10

Food _____ are less cariogenic.

Accepted Answer

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. 
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 11

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 12

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

Accepted Answer

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. 
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 13

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

Accepted Answer

A) True 
 B)False

Question 14

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

Accepted Answer

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. 
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.

Question 15

Professionally applied fluoride topical agents last for approximately:

Accepted Answer

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

Question 16

Fluoride is thought to work by:

Accepted Answer

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. 
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 17

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.

Accepted Answer

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. 
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 concerning guidelines for the proper use of dental floss?

Accepted Answer

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. 
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.

Exam 13: Hygiene-Related Oral Disorders

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

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

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

The majority of desensitizing toothpastes contain:

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

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

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

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

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.

Food _____ are less cariogenic.

Which of the following statements is true of Xylitol?

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

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

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

Professionally applied fluoride topical agents last for approximately:

Fluoride is thought to work by:

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.

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

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