Community dentistry: school fluoride mouthrinse: practice question

A Dentistry question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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Dentistry · Community dentistry: school fluoride mouthrinse

Sample item

A school-based caries prevention programme uses a weekly supervised fluoride mouthrinse. Which concentration is used for the weekly rinse?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

A. 0.2 percent sodium fluoride

Weekly rinses use 0.2 percent sodium fluoride and daily rinses use 0.05 percent. Supervised school programmes favour weekly use for convenience. Children must be old enough to rinse and spit without swallowing.

Option by option

  • A. 0.2 percent sodium fluoride (correct)

    Correct. A 0.2 percent NaF rinse is the weekly regimen.

  • B. 2 percent sodium fluoride

    A 2 percent sodium fluoride solution is a professional topical application given at repeated visits, not a school rinse.

  • C. 0.05 percent sodium fluoride

    0.05 percent is the daily home mouthrinse.

  • D. 1.23 percent acidulated phosphate fluoride

    APF gel is a professional tray application, not a rinse.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

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Questions about this Dentistry question

What is the answer to this Dentistry question?

The best answer is A, 0.2 percent sodium fluoride. Weekly rinses use 0.

Why is "2 percent sodium fluoride" not the answer?

A 2 percent sodium fluoride solution is a professional topical application given at repeated visits, not a school rinse.

Why is "0.05 percent sodium fluoride" not the answer?

0.05 percent is the daily home mouthrinse.

Why is "1.23 percent acidulated phosphate fluoride" not the answer?

APF gel is a professional tray application, not a rinse.

What concept does this question test?

It tests Community dentistry: school fluoride mouthrinse in Dentistry. 2 percent sodium fluoride and daily rinses use 0.05 percent. Supervised school programmes favour weekly use for convenience. Children must be old enough to rinse and spit without swallowing.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Community dentistry: school fluoride mouthrinse?

Learn the dental formula, eruption ages and tooth structure once, as tables. Then use the flashcards and the other Dentistry questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.