Dental materials and radiology: mineral trioxide aggregate: 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 and radiology: mineral trioxide aggregate

Sample item

Which indication is best treated with mineral trioxide aggregate?

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

The answer and the reasoning

A. Repair of a root perforation

MTA is biocompatible, sets in the presence of moisture and seals well, so it is used for pulp capping, pulpotomy, perforation repair, apexification and retrograde fillings. It is expensive and slow-setting.

Option by option

  • A. Repair of a root perforation (correct)

    Correct. MTA is a standard material for perforation repair.

  • B. Temporary filling of a cavity for a week

    Temporary fillings use zinc oxide eugenol or similar cements.

  • C. Final impression of a denture

    Impression materials are alginates and elastomers.

  • D. Taking a bite registration

    Bite registration uses wax or elastomeric pastes.

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 A, Repair of a root perforation. MTA is biocompatible, sets in the presence of moisture and seals well, so it is used for pulp capping, pulpotomy, perforation repair, apexification and retrograde fillings.

Why is "Temporary filling of a cavity for a week" not the answer?

Temporary fillings use zinc oxide eugenol or similar cements.

Why is "Final impression of a denture" not the answer?

Impression materials are alginates and elastomers.

Why is "Taking a bite registration" not the answer?

Bite registration uses wax or elastomeric pastes.

What concept does this question test?

It tests Dental materials and radiology: mineral trioxide aggregate in Dentistry. It is expensive and slow-setting.

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 and radiology: mineral trioxide aggregate?

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.