Dental materials: 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

Sample item

What material commonly fills a prepared root canal?

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

The answer and the reasoning

D. Gutta-percha

Gutta-percha is used with sealer to obturate cleaned root canals, creating a dense fill that limits reinfection of the endodontic space.

Option by option

  • A. Alginate

    Alginate is an impression material.

  • B. Amalgam

    Amalgam is a restorative filling material, not a canal obturant.

  • C. Composite resin

    Composite resin is used for many direct restorations.

  • D. Gutta-percha (correct)

    Correct: gutta-percha is used for root-canal obturation.

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 D, Gutta-percha. Gutta-percha is used with sealer to obturate cleaned root canals, creating a dense fill that limits reinfection of the endodontic space.

Why is "Alginate" not the answer?

Alginate is an impression material.

Why is "Amalgam" not the answer?

Amalgam is a restorative filling material, not a canal obturant.

Why is "Composite resin" not the answer?

Composite resin is used for many direct restorations.

What concept does this question test?

It tests Dental materials in Dentistry. The correct option holds because: Correct: gutta-percha is used for root-canal obturation.

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?

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.