Caries, pulp and periodontal disease: remineralising agents: 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 · Caries, pulp and periodontal disease: remineralising agents

Sample item

A paste containing casein phosphopeptide with amorphous calcium phosphate is advised for white spot lesions after orthodontic treatment. What is its action?

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

The answer and the reasoning

D. It delivers bioavailable calcium and phosphate to promote remineralisation

Casein phosphopeptide-amorphous calcium phosphate stabilises calcium and phosphate in plaque and saliva, increasing their availability to remineralise early enamel lesions. It is used alongside fluoride. It should be avoided in patients allergic to milk protein.

Option by option

  • A. It desensitises by sealing pulp tissue

    The paste does not seal pulp tissue.

  • B. It etches enamel to improve bonding

    Etching is performed with phosphoric acid, not this paste.

  • C. It kills bacteria through chlorine release

    Chlorine release is a feature of hypochlorite.

  • D. It delivers bioavailable calcium and phosphate to promote remineralisation (correct)

    Correct. It supplies calcium and phosphate for remineralisation.

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 D, It delivers bioavailable calcium and phosphate to promote remineralisation. Casein phosphopeptide-amorphous calcium phosphate stabilises calcium and phosphate in plaque and saliva, increasing their availability to remineralise early enamel lesions.

Why is "It desensitises by sealing pulp tissue" not the answer?

The paste does not seal pulp tissue.

Why is "It etches enamel to improve bonding" not the answer?

Etching is performed with phosphoric acid, not this paste.

Why is "It kills bacteria through chlorine release" not the answer?

Chlorine release is a feature of hypochlorite.

What concept does this question test?

It tests Caries, pulp and periodontal disease: remineralising agents in Dentistry. It is used alongside fluoride. It should be avoided in patients allergic to milk protein.

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 Caries, pulp and periodontal disease: remineralising agents?

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.