Local anaesthesia: 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 · Local anaesthesia

Sample item

Why is aspiration performed before depositing local anaesthetic?

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

The answer and the reasoning

C. Reduce the chance of inadvertent intravascular injection

Aspiration checks whether the needle tip is in a blood vessel, helping reduce the risk of intravascular delivery and systemic toxicity.

Option by option

  • A. Measure periodontal pocket depth

    Pocket depth needs a periodontal probe.

  • B. Increase the speed of enamel mineralization

    Local anaesthetic does not mineralize enamel.

  • C. Reduce the chance of inadvertent intravascular injection (correct)

    Correct: aspiration is a safety step before injection.

  • D. Sterilize the needle lumen

    Aspiration does not sterilize equipment.

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 C, Reduce the chance of inadvertent intravascular injection. Aspiration checks whether the needle tip is in a blood vessel, helping reduce the risk of intravascular delivery and systemic toxicity.

Why is "Measure periodontal pocket depth" not the answer?

Pocket depth needs a periodontal probe.

Why is "Increase the speed of enamel mineralization" not the answer?

Local anaesthetic does not mineralize enamel.

Why is "Sterilize the needle lumen" not the answer?

Aspiration does not sterilize equipment.

What concept does this question test?

It tests Local anaesthesia in Dentistry. The correct option holds because: Correct: aspiration is a safety step before injection.

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 Local anaesthesia?

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.