Restorative 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 · Restorative dentistry

Sample item

What is polymerization shrinkage in resin composite?

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

The answer and the reasoning

A. Volume reduction as resin cures

Composite resin contracts during polymerization, potentially creating marginal stress or gaps if layering and bonding technique are not controlled.

Option by option

  • A. Volume reduction as resin cures (correct)

    Correct: curing resin loses volume.

  • B. Expansion of enamel after fluoride

    Fluoride does not expand enamel this way.

  • C. Loss of alveolar bone after extraction

    Bone loss is periodontal pathology.

  • D. Formation of calculus on teeth

    Calculus is mineralized plaque.

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.

More Dentistry questions

Questions about this Dentistry question

What is the answer to this Dentistry question?

The best answer is A, Volume reduction as resin cures. Composite resin contracts during polymerization, potentially creating marginal stress or gaps if layering and bonding technique are not controlled.

Why is "Expansion of enamel after fluoride" not the answer?

Fluoride does not expand enamel this way.

Why is "Loss of alveolar bone after extraction" not the answer?

Bone loss is periodontal pathology.

Why is "Formation of calculus on teeth" not the answer?

Calculus is mineralized plaque.

What concept does this question test?

It tests Restorative dentistry in Dentistry. The correct option holds because: Correct: curing resin loses volume.

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 Restorative 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.