Orthodontics · single question

In a Class II division 2 malocclusion, how is the curve of Spee typically affected?

  1. It is unaffected
  2. It is exaggerated (steep/deep)
  3. It is reversed
  4. It is flat
Show answer and explanation

Correct answer: B. It is exaggerated (steep/deep)

  • A. Incorrect. The curve of Spee is characteristically and significantly altered in this malocclusion.
  • B. Correct. Class II division 2 features retroclined maxillary central incisors and a deep overbite, which produces a markedly exaggerated (deep) curve of Spee. Levelling the curve is a key treatment objective and requires arch length.
  • C. Incorrect. A reversed curve of Spee is seen in the mandibular arch in some open bite and Class III patterns.
  • D. Incorrect. A flat curve is the treatment goal, not the presenting condition.

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