Orthodontics: 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 · Orthodontics

Sample item

Why is retention needed after orthodontic tooth movement?

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

The answer and the reasoning

C. Periodontal and soft tissues need time to reorganize around new positions

Teeth tend to relapse after active movement because surrounding periodontal fibres and occlusal forces require time to adapt to their new positions.

Option by option

  • A. Retainers eliminate all future caries risk

    Retainers do not replace plaque control for caries prevention.

  • B. Enamel cannot form until retainers are worn

    Enamel formation is not dependent on retainers.

  • C. Periodontal and soft tissues need time to reorganize around new positions (correct)

    Correct: tissue reorganization and relapse risk justify retention.

  • D. Retention permanently stops facial growth

    Facial growth can continue despite retention.

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 C, Periodontal and soft tissues need time to reorganize around new positions. Teeth tend to relapse after active movement because surrounding periodontal fibres and occlusal forces require time to adapt to their new positions.

Why is "Retainers eliminate all future caries risk" not the answer?

Retainers do not replace plaque control for caries prevention.

Why is "Enamel cannot form until retainers are worn" not the answer?

Enamel formation is not dependent on retainers.

Why is "Retention permanently stops facial growth" not the answer?

Facial growth can continue despite retention.

What concept does this question test?

It tests Orthodontics in Dentistry. The correct option holds because: Correct: tissue reorganization and relapse risk justify retention.

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 Orthodontics?

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.