In removable partial dentures (RPDs), various types of movements occur during function, which can affect the comfort, stability, and effectiveness of the prosthesis. These movements can be categorized into several key types:
### 1. **Vertical Movement**
- **Definition:** This refers to the up-and-down movement of the partial denture.
- **Causes:** It can occur due to occlusal forces when the patient bites down.
- **Implications:**