Orthodontics and paediatric dentistry: nasal septum theory: 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 · Orthodontics and paediatric dentistry: nasal septum theory

Sample item

Which structure does Scott's theory of craniofacial growth propose as the primary determinant of midfacial growth?

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

The answer and the reasoning

A. Nasal septal cartilage

Scott's nasal septum theory states that growth of the nasal septal cartilage pushes the maxilla downward and forward, with sutures reacting passively. The sutural dominance theory (Sicher) gives sutures the leading role, and Moss's functional matrix theory attributes growth to the soft tissues.

Option by option

  • A. Nasal septal cartilage (correct)

    Correct. The septal cartilage is the proposed driving force in this theory.

  • B. Sutures of the maxilla

    Sutural dominance is the older theory that Scott's idea replaced as the primary driver.

  • C. Spheno-occipital synchondrosis

    The spheno-occipital synchondrosis is a growth site of the cranial base.

  • D. Condylar cartilage of the mandible

    The condylar cartilage is a growth site of the mandible, not the midface.

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, Nasal septal cartilage. Scott's nasal septum theory states that growth of the nasal septal cartilage pushes the maxilla downward and forward, with sutures reacting passively.

Why is "Sutures of the maxilla" not the answer?

Sutural dominance is the older theory that Scott's idea replaced as the primary driver.

Why is "Spheno-occipital synchondrosis" not the answer?

The spheno-occipital synchondrosis is a growth site of the cranial base.

Why is "Condylar cartilage of the mandible" not the answer?

The condylar cartilage is a growth site of the mandible, not the midface.

What concept does this question test?

It tests Orthodontics and paediatric dentistry: nasal septum theory in Dentistry. The sutural dominance theory (Sicher) gives sutures the leading role, and Moss's functional matrix theory attributes growth to the soft tissues.

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 Orthodontics and paediatric dentistry: nasal septum theory?

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.