An increased occlusal plane angle indicates what type of rotation?

An increased occlusal plane angle indicates what type of rotation?

• A. Vertical rotation
• B. Horizontal rotation
• C. Clockwise rotation
• D. Anticlockwise rotation

Answer: (C)

An increased occlusal plane angle suggests a specific orientation change in the relationship between the maxilla and mandible. When the occlusal plane angle increases, it indicates that the mandible has rotated in a clockwise direction relative to the maxilla. This clockwise rotation reduces the vertical dimension in the anterior region and can lead to a more pronounced curve of Spee, which further emphasizes a downward movement of the posterior teeth in relation to the anterior teeth. This type of rotation typically influences various dental and skeletal relationships, affecting both dental aesthetics and functional occlusion. Understanding the effects of occlusal plane angle changes is crucial in orthodontics and can inform treatment planning, as it aids in predicting the end results of orthodontic movements and how they will impact the overall facial profile and dental relationships.

An increased occlusal plane angle suggests a specific orientation change in the relationship between the maxilla and mandible. When the occlusal plane angle increases, it indicates that the mandible has rotated in a clockwise direction relative to the maxilla.

This clockwise rotation reduces the vertical dimension in the anterior region and can lead to a more pronounced curve of Spee, which further emphasizes a downward movement of the posterior teeth in relation to the anterior teeth. This type of rotation typically influences various dental and skeletal relationships, affecting both dental aesthetics and functional occlusion.

Understanding the effects of occlusal plane angle changes is crucial in orthodontics and can inform treatment planning, as it aids in predicting the end results of orthodontic movements and how they will impact the overall facial profile and dental relationships.