Community dentistry: Spaulding classification of handpieces: 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 · Community dentistry: Spaulding classification of handpieces

Sample item

According to the Spaulding classification, how are dental handpieces that contact mucous membranes but do not penetrate soft tissue or bone categorised?

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

The answer and the reasoning

B. Semi-critical items needing heat sterilisation

Spaulding's classification divides items into critical (penetrate tissue or bone), semi-critical (contact mucous membranes or non-intact skin) and non-critical (contact only intact skin). Handpieces are semi-critical and should be heat sterilised between patients. Non-critical items need cleaning and disinfection.

Option by option

  • A. Critical items needing only low-level disinfection

    Critical items enter sterile tissue and need sterilisation, not low-level disinfection.

  • B. Semi-critical items needing heat sterilisation (correct)

    Correct. Handpieces touch mucosa and should be heat sterilised between patients.

  • C. Non-critical items needing wiping with disinfectant

    Non-critical items touch intact skin only, which does not fit handpieces.

  • D. Environmental surfaces needing no treatment

    Handpieces are patient-care items and always need reprocessing.

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, Semi-critical items needing heat sterilisation. Spaulding's classification divides items into critical (penetrate tissue or bone), semi-critical (contact mucous membranes or non-intact skin) and non-critical (contact only intact skin).

Why is "Critical items needing only low-level disinfection" not the answer?

Critical items enter sterile tissue and need sterilisation, not low-level disinfection.

Why is "Non-critical items needing wiping with disinfectant" not the answer?

Non-critical items touch intact skin only, which does not fit handpieces.

Why is "Environmental surfaces needing no treatment" not the answer?

Handpieces are patient-care items and always need reprocessing.

What concept does this question test?

It tests Community dentistry: Spaulding classification of handpieces in Dentistry. Handpieces are semi-critical and should be heat sterilised between patients. Non-critical items need cleaning and disinfection.

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 Community dentistry: Spaulding classification of handpieces?

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.