Start practicing

Prosthodontics & Occlusion · single question

Which statement about the curve of Spee is correct?

  1. It is the anteroposterior curve of the occlusal plane, and an exaggerated (deep) curve is associated with a deep-bite / Class II division 2 tendency
  2. It is a side-to-side (mediolateral) curve
  3. A flat curve of Spee always indicates a Class III malocclusion
  4. It has no relevance to orthodontic leveling
Show answer and explanation

Correct answer: A. It is the anteroposterior curve of the occlusal plane, and an exaggerated (deep) curve is associated with a deep-bite / Class II division 2 tendency

The curve of Spee is the anteroposterior curvature of the occlusal plane from the canine to the last molar. A deep curve accompanies deep overbite (e.g., Class II division 2) and must be leveled to correct the bite and gain arch length.Other options: The mediolateral curve is the curve of Wilson; a flat curve is not diagnostic of Class III; leveling the curve of Spee is a key orthodontic step.Key exam takeaway: Curve of Spee = A-P occlusal curve; a deep curve goes with deep bite and is leveled during treatment (curve of Wilson = side-to-side).

Practice Prosthodontics & Occlusion questions Prosthodontics & Occlusion study notes

More Prosthodontics & Occlusion practice questions