Oral pathology: cementoblastoma: 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 · Oral pathology: cementoblastoma

Sample item

A teenager has pain and swelling near a mandibular first molar. A radiograph shows a dense radiopaque mass fused to the root, surrounded by a thin radiolucent rim. What is the diagnosis?

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

The answer and the reasoning

B. Cementoblastoma

Cementoblastoma is a true neoplasm of cementum that is fused to the tooth root and rimmed by a radiolucent halo. Extraction of the tooth with the mass is the usual treatment.

Option by option

  • A. Periapical cemental dysplasia

    Periapical cemental dysplasia involves several lower incisors and teeth remain vital without root fusion.

  • B. Cementoblastoma (correct)

    Correct. A root-fused radiopaque mass with a halo is typical.

  • C. Condensing osteitis

    Condensing osteitis shows sclerotic bone without a radiolucent rim or root fusion.

  • D. Complex odontoma

    A complex odontoma is a mass separate from root surfaces, usually in an unerupted position.

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, Cementoblastoma. Cementoblastoma is a true neoplasm of cementum that is fused to the tooth root and rimmed by a radiolucent halo.

Why is "Periapical cemental dysplasia" not the answer?

Periapical cemental dysplasia involves several lower incisors and teeth remain vital without root fusion.

Why is "Condensing osteitis" not the answer?

Condensing osteitis shows sclerotic bone without a radiolucent rim or root fusion.

Why is "Complex odontoma" not the answer?

A complex odontoma is a mass separate from root surfaces, usually in an unerupted position.

What concept does this question test?

It tests Oral pathology: cementoblastoma in Dentistry. Extraction of the tooth with the mass is the usual treatment.

How hard is this question?

We tag it as a multi-step question: it asks you to combine more than one idea. 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 Oral pathology: cementoblastoma?

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.