# Fluoride Multiple Choice Quiz #2

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Quizzes Created: 4 | Total Attempts: 4,043
Questions: 20 | Attempts: 1,586

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Choose the correct answer from the following options

• 1.

### By what percentage are carious lesions reduced in someone who has continuously drank fluoridated water since birth?

• A.

40%-65%

• B.

10%-20%

• C.

70%-90%

• D.

30%-50%

A. 40%-65%
Explanation
The correct answer is 40%-65%. This means that carious lesions are reduced by 40% to 65% in individuals who have continuously consumed fluoridated water since birth. Fluoridated water helps to strengthen tooth enamel and prevent tooth decay, leading to a significant reduction in carious lesions.

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• 2.

### What daily dose of fluoride supplements should be given to a 5 year old who lives in an area with .5 ppm?

• A.

0 mg

• B.

.5 mg

• C.

.25 mg

• D.

1 mg

C. .25 mg
Explanation
A daily dose of .25 mg of fluoride supplements should be given to a 5-year-old who lives in an area with .5 ppm. This is because the recommended dosage of fluoride for children living in areas with fluoride levels between .3 to .6 ppm is .25 mg. Therefore, it is important to provide the child with the appropriate amount of fluoride to promote dental health without exceeding the recommended dosage.

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• 3.

### Sodium fluoride gels and foams for in-office use are generally available in the following concentration?

• A.

1.23%

• B.

2.0%

• C.

5%

• D.

1.1%

B. 2.0%
Explanation
Sodium fluoride gels and foams for in-office use are generally available in a concentration of 2.0%.

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• 4.

### 1.23% APF Gel/Foam has a pH of?

• A.

5

• B.

7

• C.

2.5

• D.

3.5

D. 3.5
Explanation
The pH of 1.23% APF Gel/Foam is 3.5.

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• 5.

### For optimum caries reduction fluoride varnish should be applied every _________ months?

• A.

1-2

• B.

8-12

• C.

3-6

• D.

6-8

C. 3-6
Explanation
To achieve optimum caries reduction, fluoride varnish should be applied every 3-6 months. This frequency allows for a consistent and effective delivery of fluoride to the teeth, which helps to strengthen the enamel and prevent tooth decay. Applying fluoride varnish at this interval ensures that the teeth are continuously protected against acid attacks and bacterial growth, reducing the risk of cavities.

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• 6.

### 6. Fluoride varnish would be indicated in all of the following cases EXCEPT

• A.

Patient with open carious lesion

• B.

Patient with active pit and fissure enamel lesions

• C.

Patient with orthodontic brackets

• D.

Patient with dentinal hypersensitivity

A. Patient with open carious lesion
Explanation
Fluoride varnish is a protective coating that is applied to the teeth to prevent tooth decay. It helps to strengthen the enamel and make it more resistant to acid attacks. In the case of a patient with an open carious lesion, the tooth decay has already progressed to the point where the enamel is damaged and a cavity has formed. Fluoride varnish would not be effective in this case as it cannot reverse the damage that has already occurred. Therefore, it is not indicated for patients with open carious lesions.

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• 7.

### What is the typical concentration of fluoride varnish in the USA?

• A.

2 %

• B.

5 %

• C.

1.23 %

• D.

1.1 %

B. 5 %
Explanation
In the USA, the typical concentration of fluoride varnish is 5%.

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• 8.

### What is the maximum amount of fluoride that should be place in each of the 2 trays for the pediatric patient?

• A.

2 ml

• B.

5 ml

• C.

4 ml

• D.

10 ml

A. 2 ml
Explanation
The maximum amount of fluoride that should be placed in each of the 2 trays for the pediatric patient is 2 ml. This amount is likely determined based on the recommended dosage for the patient's age and weight. Using more than the recommended amount could potentially lead to fluoride toxicity or other adverse effects. Therefore, it is important to adhere to the specified dosage to ensure the patient's safety and well-being.

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• 9.

### Prescription grade fluoride gels for home use typically have which of the following concentrations?

• A.

1.1%

• B.

2%

• C.

5%

• D.

1.23%

A. 1.1%
Explanation
Prescription grade fluoride gels for home use typically have a concentration of 1.1%. This concentration is commonly recommended by dentists as it provides effective protection against tooth decay without causing any harm or sensitivity to the teeth. Higher concentrations, such as 2% or 5%, may be used in professional dental settings for specific treatments, but they are not typically recommended for home use. The concentration of 1.23% is not commonly used in prescription grade fluoride gels for home use.

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• 10.

### 10. Check all of the following that would be likely candidates for fluoride mouthrinses

• A.

A patient with xerostomia

• B.

A patient with root exposure

• C.

A recovering alcoholic with high caries risk

• D.

A 6 and a half year old with incipient lesions

A. A patient with xerostomia
B. A patient with root exposure
D. A 6 and a half year old with incipient lesions
Explanation
Fluoride mouthrinses are commonly recommended for individuals who are at a higher risk of developing dental caries. Xerostomia, or dry mouth, can lead to an increased risk of cavities due to reduced saliva flow, so using fluoride mouthrinse can help prevent tooth decay in these patients. Patients with root exposure are also at a higher risk of cavities as the roots are more vulnerable to decay. Lastly, a 6 and a half year old with incipient lesions, which are early signs of tooth decay, can benefit from fluoride mouthrinses to prevent further progression of the lesions and protect their developing teeth.

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• 11.

### 11. Which of the following types of fluoride have a concentration of .454% in dentifrices

• A.

Sodium monofluorophosphate (Na2PO3F)

• B.

Soduim fluoride (NaF)

• C.

Stannous fluoride (SnF2)

• D.

Acidulated phosphate (APF)

C. Stannous fluoride (SnF2)
Explanation
Stannous fluoride (SnF2) is the correct answer because it is the only option listed that has a concentration of .454% in dentifrices. Sodium monofluorophosphate (Na2PO3F), Sodium fluoride (NaF), and Acidulated phosphate (APF) do not have this specific concentration.

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• 12.

### Which of the following would be appropriate instructions for a patient who has been prescribed a 1.1% Sodium fluoride gel?

• A.

Apply 10 mg to dry brush head

• B.

Should preferably be used in the morning

• C.

Should be used at least twice a day (3-4 if possible)

• D.

Do not rinse after use

D. Do not rinse after use
Explanation
The correct answer is "Do not rinse after use." This instruction is appropriate because rinsing after using the 1.1% Sodium fluoride gel would reduce its effectiveness. Fluoride gel is typically used to prevent tooth decay, and it works by strengthening the enamel on the teeth. By not rinsing after use, the fluoride gel can remain on the teeth for a longer period of time, allowing it to properly adhere and provide maximum benefit.

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• 13.

### How much fluoride toothpaste should be applied to a toddler's toothbrush?

• A.

3 nurdles

• B.

A half inch

• C.

A half pea size

• D.

As much as necessary depending on the plaque

C. A half pea size
Explanation
The correct answer is a half pea size. This is because toddlers have smaller mouths and only need a small amount of fluoride toothpaste to effectively clean their teeth. Using too much toothpaste can lead to swallowing excessive amounts of fluoride, which can be harmful to their health. Therefore, a half pea size is recommended to ensure proper oral hygiene without any potential risks.

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• 14.

### What is the range of the STD of fluoride for an average-sized adult?

• A.

.5 to 1g

• B.

3.5 to 5 g

• C.

1.25 to 2.5g

• D.

5 to 10 g

C. 1.25 to 2.5g
• 15.

### What would be the ideal supplementation of newborn baby living in an area without fluoridated water?

• A.

0 mg

• B.

.25 mg

• C.

.5 mg

• D.

1 mg

A. 0 mg
Explanation
The ideal supplementation for a newborn baby living in an area without fluoridated water would be 0 mg. This is because fluoride is commonly added to water supplies to help prevent tooth decay, but if the water does not contain fluoride, there is no need for supplementation. Newborn babies do not require additional fluoride unless specifically recommended by a healthcare professional.

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• 16.

### Patients with low caries risk may not benefit much from fluoride varnish?

• A.

True

• B.

False

A. True
Explanation
Patients with low caries risk may not benefit much from fluoride varnish because fluoride varnish is primarily used to prevent tooth decay and cavities. Patients with low caries risk already have a lower likelihood of developing these issues, so the additional protection provided by fluoride varnish may not be as necessary or beneficial for them. However, it is important to note that the effectiveness of fluoride varnish may still vary depending on individual factors, so it is always best to consult with a dental professional for personalized advice.

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• 17.

### Which one of the following is a contraindication to using APF fluoride?

• A.

Patients who have undergone chemotherapy

• B.

Patients with porcelain or composite restorations

• C.

High caries risk patients

• D.

Children under age 6

B. Patients with porcelain or composite restorations
Explanation
Patients with porcelain or composite restorations are contraindicated to using APF fluoride because APF fluoride can cause surface roughening or etching of these restorations, leading to their deterioration or discoloration.

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• 18.

### Prevident 5000 contains?

• A.

APF

• B.

NaF

• C.

SnF

• D.

Na2PO3F

B. NaF
Explanation
Prevident 5000 contains NaF, which stands for sodium fluoride. Sodium fluoride is a common ingredient in toothpaste and mouthwash, known for its ability to prevent tooth decay and strengthen tooth enamel. It helps to remineralize teeth and make them more resistant to acid attacks from plaque and bacteria. Therefore, the presence of NaF in Prevident 5000 makes it an effective dental product for maintaining oral health.

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• 19.

### The following are appropriate instructions to patients after application of fluoride varnish. CHECK ALL THAT APPLY

• A.

Tell patient not to drink hot liquids or eat hard foods

• B.

Inform patient that if they notice a yellowing of teeth this is NOT normal

• C.

Instructed them not to brush/floss for AT LEAST 4-6 hours (next day better)

• D.

Instruct them to remove varnish with normal brushing and flossing at the appropriate time interval

A. Tell patient not to drink hot liquids or eat hard foods
C. Instructed them not to brush/floss for AT LEAST 4-6 hours (next day better)
D. Instruct them to remove varnish with normal brushing and flossing at the appropriate time interval
Explanation
The correct answer is to tell the patient not to drink hot liquids or eat hard foods because fluoride varnish needs time to set and harden properly. Instructing them not to brush/floss for at least 4-6 hours (next day better) is important because it allows the varnish to fully adhere to the teeth. Additionally, instructing them to remove the varnish with normal brushing and flossing at the appropriate time interval ensures proper oral hygiene and maintenance of the varnish's benefits. Informing the patient that if they notice a yellowing of teeth, this is not normal is not an appropriate instruction after the application of fluoride varnish.

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• 20.

### There is a big difference between Sodium fluoride and the Sodium MFP in caries reduction

• A.

True

• B.

False

B. False
Explanation
Sodium fluoride and Sodium MFP are both used for caries reduction, but there is not a big difference between them. Both compounds are effective in preventing tooth decay and strengthening tooth enamel. While they may have slight variations in their chemical composition, the overall impact on caries reduction is similar. Therefore, the statement that there is a big difference between Sodium fluoride and Sodium MFP in caries reduction is false.

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• Current Version
• Mar 22, 2023
Quiz Edited by
ProProfs Editorial Team
• Jan 11, 2013
Quiz Created by
Klamberton

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