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.

Try it

Dentistry · Dental materials: composite resin

Sample item

Which tooth-coloured restorative material is polymerised by visible blue light and contains a resin matrix with glass or silica filler?

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

The answer and the reasoning

A. Composite resin

Composite resins combine a methacrylate resin matrix, inorganic filler and a photoinitiator activated by blue light. They need enamel etching and bonding for retention.

Option by option

  • A. Composite resin (correct)

    Correct. Composite is light-cured and tooth coloured.

  • B. Dental amalgam

    Amalgam is metallic and not light-cured.

  • C. Zinc oxide eugenol

    ZOE is a self-setting cement.

  • D. Gutta-percha

    Gutta-percha is a root filling thermoplastic.

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, Composite resin. Composite resins combine a methacrylate resin matrix, inorganic filler and a photoinitiator activated by blue light.

Why is "Dental amalgam" not the answer?

Amalgam is metallic and not light-cured.

Why is "Zinc oxide eugenol" not the answer?

ZOE is a self-setting cement.

Why is "Gutta-percha" not the answer?

Gutta-percha is a root filling thermoplastic.

What concept does this question test?

It tests Dental materials: composite resin in Dentistry. They need enamel etching and bonding for retention.

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.