Dental materials: composite resin: 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 · Dental materials: composite resin

Sample item

Which step improves bonding of composite resin to enamel?

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

The answer and the reasoning

B. Phosphoric-acid etching to create microporosities

Acid etching creates enamel microporosities into which adhesive resin infiltrates, producing micromechanical retention. Moisture control and correct curing are also essential.

Option by option

  • A. Avoiding light curing

    Light curing is required for many composite systems.

  • B. Phosphoric-acid etching to create microporosities (correct)

    Correct. Etching creates the retentive surface for resin infiltration.

  • C. Applying eugenol directly before bonding

    Eugenol can interfere with resin polymerization in some settings.

  • D. Leaving the smear layer thick and dry

    An unmanaged smear layer compromises predictable bonding.

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 B, Phosphoric-acid etching to create microporosities. Acid etching creates enamel microporosities into which adhesive resin infiltrates, producing micromechanical retention.

Why is "Avoiding light curing" not the answer?

Light curing is required for many composite systems.

Why is "Applying eugenol directly before bonding" not the answer?

Eugenol can interfere with resin polymerization in some settings.

Why is "Leaving the smear layer thick and dry" not the answer?

An unmanaged smear layer compromises predictable bonding.

What concept does this question test?

It tests Dental materials: composite resin in Dentistry. Moisture control and correct curing are also essential.

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 Dental materials: composite resin?

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.