Endodontics: 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 · Endodontics

Sample item

What does a non-vital tooth fail to demonstrate on sensibility testing?

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

The answer and the reasoning

B. A normal neural response to cold or electric stimulus

Sensibility tests assess neural response within the pulp. A non-vital tooth often fails to respond, though results require correlation with clinical and radiographic findings.

Option by option

  • A. A contact point with an adjacent tooth

    Contact points do not determine pulp vitality.

  • B. A normal neural response to cold or electric stimulus (correct)

    Correct: absent neural response suggests loss of pulpal vitality.

  • C. A visible periodontal ligament space

    Periodontal ligament space is assessed radiographically.

  • D. An intact enamel surface

    Enamel can remain intact despite pulpal necrosis.

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, A normal neural response to cold or electric stimulus. Sensibility tests assess neural response within the pulp.

Why is "A contact point with an adjacent tooth" not the answer?

Contact points do not determine pulp vitality.

Why is "A visible periodontal ligament space" not the answer?

Periodontal ligament space is assessed radiographically.

Why is "An intact enamel surface" not the answer?

Enamel can remain intact despite pulpal necrosis.

What concept does this question test?

It tests Endodontics in Dentistry. A non-vital tooth often fails to respond, though results require correlation with clinical and radiographic findings.

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 Endodontics?

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.