1. Objective : To explore the application of removable partial denture buccal - lingual rest in clinic.

2. Objective To increase the retention and stability of traditional removable partial denture.

3. Objective: Evaluate the influence of the biological relationship of the anterior teeth and their periodontium on the beauty of the anterior fixed partial denture.

4. Objective: To test the rationale for designing an occlusal rest for a distal - removable partial denture.

5. Conclusion: It is feasible using designed buccal - lingual rest in repairing removable partial denture.

6. Objective To discuss the application way for element library of dentition and the removable partial denture.

7. Conclude:It is better to select one molar Pontic and at least two abutments for a successful posterior cantilevered fixed partial denture.

8. Objective : To improve retainers aesthetics and alleviate buccal retainers peculiar sense for patients removable partial denture.

9. Objective: To test the rationale for designing an occlusal rest for a distal - extension removable partial denture.