Orthodontics · single question
In a Class II division 2 malocclusion, how is the curve of Spee typically affected?
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.