Preventive dentistry: 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 · Preventive dentistry

Sample item

Which topical preventive agent is applied to enamel to lower caries risk in high-risk patients?

AHeparinBFluoride varnishCDigoxinDInsulin

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

The answer and the reasoning

B. Fluoride varnish

Fluoride varnish delivers concentrated fluoride to enamel, enhancing remineralization and reducing acid-related demineralization in patients at elevated caries risk.

Option by option

A. Heparin
Heparin is an anticoagulant, not a dental preventive agent.
B. Fluoride varnish (correct)
Correct: fluoride varnish is a topical caries-prevention treatment.
C. Digoxin
Digoxin is a cardiac medicine and is not applied to teeth.
D. Insulin
Insulin treats hyperglycemia and has no enamel-protective role.

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.

Questions about this Dentistry question

What is the answer to this Dentistry question?

The best answer is B, Fluoride varnish. Fluoride varnish delivers concentrated fluoride to enamel, enhancing remineralization and reducing acid-related demineralization in patients at elevated caries risk.

Why is "Heparin" not the answer?

Heparin is an anticoagulant, not a dental preventive agent.

Why is "Digoxin" not the answer?

Digoxin is a cardiac medicine and is not applied to teeth.

Why is "Insulin" not the answer?

Insulin treats hyperglycemia and has no enamel-protective role.

What concept does this question test?

It tests Preventive dentistry in Dentistry. The correct option holds because: Correct: fluoride varnish is a topical caries-prevention treatment.

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 Preventive dentistry?

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.