Local anesthesia: 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 anesthesia

Sample item

Why is epinephrine added to many dental anesthetic solutions?

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

The answer and the reasoning

A. Prolongs action by vasoconstriction

Epinephrine reduces local blood flow through vasoconstriction, slowing anesthetic absorption and extending local duration while reducing bleeding in suitable patients.

Option by option

  • A. Prolongs action by vasoconstriction (correct)

    Correct: vasoconstriction prolongs the local anesthetic effect.

  • B. Causes sedation

    Epinephrine does not produce procedural sedation.

  • C. Dissolves plaque

    Plaque requires mechanical disruption, not epinephrine.

  • D. Provides anticoagulation

    Epinephrine is not an anticoagulant.

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, Prolongs action by vasoconstriction. Epinephrine reduces local blood flow through vasoconstriction, slowing anesthetic absorption and extending local duration while reducing bleeding in suitable patients.

Why is "Causes sedation" not the answer?

Epinephrine does not produce procedural sedation.

Why is "Dissolves plaque" not the answer?

Plaque requires mechanical disruption, not epinephrine.

Why is "Provides anticoagulation" not the answer?

Epinephrine is not an anticoagulant.

What concept does this question test?

It tests Local anesthesia in Dentistry. The correct option holds because: Correct: vasoconstriction prolongs the local anesthetic effect.

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 anesthesia?

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.