Caries, pulp and periodontal disease: Black's class III: 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.

Try it

Dentistry · Caries, pulp and periodontal disease: Black's class III

Sample item

A cavity is detected on the mesial surface of a maxillary central incisor, with the incisal angle intact. How is it classified?

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

The answer and the reasoning

A. Class III

Class III is a proximal lesion in incisors or canines that does not involve the incisal angle. If the angle is lost, it becomes class IV.

Option by option

  • A. Class III (correct)

    Correct. A proximal anterior lesion with an intact incisal angle is class III.

  • B. Class VI

    Class VI affects cusp tips or incisal edges.

  • C. Class II

    Class II involves posterior proximal surfaces.

  • D. Class IV

    Class IV would require loss of the incisal angle.

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, Class III. Class III is a proximal lesion in incisors or canines that does not involve the incisal angle.

Why is "Class VI" not the answer?

Class VI affects cusp tips or incisal edges.

Why is "Class II" not the answer?

Class II involves posterior proximal surfaces.

Why is "Class IV" not the answer?

Class IV would require loss of the incisal angle.

What concept does this question test?

It tests Caries, pulp and periodontal disease: Black's class III in Dentistry. If the angle is lost, it becomes class IV.

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: Black's class III?

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.