Oral and maxillofacial surgery and facial fractures: Champy principle: 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 and maxillofacial surgery and facial fractures: Champy principle

Sample item

A surgeon fixes an uncomplicated fracture of the mandibular angle with a single small miniplate along the superior border near the external oblique ridge through an intraoral approach. Which principle justifies this?

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

The answer and the reasoning

A. Champy's ideal lines of osteosynthesis, which place the plate in the tension zone

Champy described lines along which miniplates counter the tensile forces on the upper border of the mandible during function. A monocortical miniplate there gives adequate stability for simple angle fractures. Heavy load-bearing plates are reserved for comminuted fractures.

Option by option

  • A. Champy's ideal lines of osteosynthesis, which place the plate in the tension zone (correct)

    Correct. The plate sits in the zone of tension along the ideal osteosynthesis line.

  • B. Intermaxillary fixation alone without plates

    Intermaxillary fixation alone is a closed treatment without a plate.

  • C. Lag screw fixation across the symphysis

    Lag screws across the symphysis are used for midline fractures, not angle fractures.

  • D. Placement of a plate on the inferior border for compression

    Inferior border plating is a heavier load-bearing approach and is not the Champy technique.

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 A, Champy's ideal lines of osteosynthesis, which place the plate in the tension zone. Champy described lines along which miniplates counter the tensile forces on the upper border of the mandible during function.

Why is "Intermaxillary fixation alone without plates" not the answer?

Intermaxillary fixation alone is a closed treatment without a plate.

Why is "Lag screw fixation across the symphysis" not the answer?

Lag screws across the symphysis are used for midline fractures, not angle fractures.

Why is "Placement of a plate on the inferior border for compression" not the answer?

Inferior border plating is a heavier load-bearing approach and is not the Champy technique.

What concept does this question test?

It tests Oral and maxillofacial surgery and facial fractures: Champy principle in Dentistry. A monocortical miniplate there gives adequate stability for simple angle fractures. Heavy load-bearing plates are reserved for comminuted fractures.

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 and maxillofacial surgery and facial fractures: Champy principle?

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.