Fluoride Multiple Choice
Choose the correct answers from the options below
Questions and Answers
- 1.
Most bottled water contains fluoride
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement is false because most bottled water does not contain fluoride. Fluoride is typically found in tap water, as it is added to promote dental health. However, many brands of bottled water go through a filtration process that removes fluoride along with other impurities. Therefore, it is not accurate to say that most bottled water contains fluoride.Rate this question:
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- 2.
Which of the following was an original research city for fluoride in 1945?
- A.
New York, New York
- B.
Albuquerque, New Mexico
- C.
Grand Rapids, Michigan
- D.
Aurora, Illinois
Correct Answer
C. Grand Rapids, MichiganExplanation
Grand Rapids, Michigan was an original research city for fluoride in 1945. This means that it was one of the first cities to conduct research on the effects of fluoride and its potential benefits for dental health. The city likely implemented a water fluoridation program or conducted studies to determine the impact of fluoride on dental caries.Rate this question:
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- 3.
Approximately 99% of systemic fluoride is retained in which of the following:
- A.
Kidneys
- B.
Mineralized tissues
- C.
Blood plasma
- D.
Oral mucosa
Correct Answer
B. Mineralized tissuesExplanation
Systemic fluoride refers to fluoride that is ingested and then distributed throughout the body via the bloodstream. The question asks where approximately 99% of this systemic fluoride is retained, and the correct answer is mineralized tissues. Mineralized tissues include teeth and bones, which have a high affinity for fluoride and can retain a significant amount of it. This is why fluoride is often recommended for dental health, as it can help strengthen tooth enamel and prevent tooth decay.Rate this question:
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- 4.
The process of lowering the amount of fluoride in fluoridated water to an optimum level to prevent fluorosis is known as:
- A.
Hypocalcification
- B.
Demineralization
- C.
Unfluoridation
- D.
Defluoridation
Correct Answer
D. DefluoridationExplanation
Defluoridation is the process of lowering the amount of fluoride in fluoridated water to an optimum level in order to prevent fluorosis. Fluorosis is a condition that occurs when excessive fluoride is consumed, leading to dental and skeletal problems. By removing excess fluoride from the water, defluoridation helps to ensure that the water is safe for consumption and does not pose a risk to public health.Rate this question:
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- 5.
After tooth eruption adults get no further benefits from fluoride
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Adults do continue to benefit from fluoride even after tooth eruption. Fluoride helps to prevent tooth decay by strengthening the enamel and making it more resistant to acid attacks from bacteria and sugars in the mouth. It can also help to remineralize early stages of tooth decay. Therefore, it is important for adults to continue using fluoride toothpaste, mouth rinses, and receiving professional fluoride treatments to maintain good oral health.Rate this question:
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- 6.
All of the following are topical effects of fluoride in preventing dental caries EXCEPT
- A.
Inhibits demineralization
- B.
Enhances remineralization
- C.
Inhibits bacterial activity
- D.
Decreases oral pH
Correct Answer
D. Decreases oral pHExplanation
Fluoride has several topical effects in preventing dental caries. It inhibits demineralization by strengthening the tooth enamel and making it more resistant to acid attacks. It also enhances remineralization by promoting the incorporation of minerals into the tooth structure. Additionally, fluoride inhibits bacterial activity by interfering with the metabolism and growth of bacteria in the mouth. However, fluoride does not decrease oral pH. In fact, it can help maintain a neutral pH in the mouth by buffering the acids produced by bacteria.Rate this question:
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- 7.
Dental Fluorosis can begin at levels over _____ ppm
- A.
2 ppm
- B.
8 ppm
- C.
4 ppm
- D.
1.7 ppm
Correct Answer
A. 2 ppmExplanation
Dental Fluorosis is a condition that affects the teeth due to excessive fluoride intake. It can occur when fluoride levels in drinking water are above a certain threshold. The correct answer, 2 ppm, suggests that Dental Fluorosis can begin when fluoride levels in water are over 2 parts per million. This means that if the fluoride concentration in drinking water exceeds this level, individuals may be at risk of developing Dental Fluorosis.Rate this question:
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- 8.
Skeletal fluorosis is seen in drinking water fluoride levels over
- A.
2 ppm
- B.
8 ppm
- C.
20 ppm
- D.
40 ppm
Correct Answer
C. 20 ppmExplanation
Skeletal fluorosis is a condition that occurs due to excessive fluoride intake over a long period of time. It is characterized by the accumulation of fluoride in the bones, leading to bone and joint pain, stiffness, and deformities. The threshold level at which skeletal fluorosis is seen in drinking water is considered to be 20 ppm (parts per million) of fluoride. When the fluoride concentration in drinking water exceeds this level, there is an increased risk of developing skeletal fluorosis.Rate this question:
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- 9.
All of the following are signs of dental fluorosis EXCEPT
- A.
Slight green stain at gingival margin
- B.
Dark brown stain present
- C.
Areas of very whiter than normal enamel
- D.
Pitting of enamel surface
Correct Answer
A. Slight green stain at gingival marginExplanation
Dental fluorosis is a condition caused by excessive fluoride intake during tooth development, resulting in changes in the appearance of tooth enamel. It typically presents as areas of very white or brown stains on the teeth, pitting of the enamel surface, or enamel that is whiter than normal. A slight green stain at the gingival margin is not a sign of dental fluorosis and is therefore the exception in this case.Rate this question:
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- 10.
Prior to Jan, 2011, the accepted range of fluoride levels in drinking water by the U.S Public Health Service was
- A.
1 - 2 ppm
- B.
.7 - 4 ppm
- C.
.7 - 1.2 ppm
- D.
.7 ppm
Correct Answer
C. .7 - 1.2 ppmExplanation
The accepted range of fluoride levels in drinking water by the U.S Public Health Service prior to January 2011 was between 0.7 and 1.2 parts per million (ppm).Rate this question:
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Jul 02, 2024Quiz Edited by
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Jan 11, 2013Quiz Created by
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