1. Basic principles of Removable Partial Denture Design
Dr. Emad Hanbali

2. Outline Outline the edentulous areas to be restored :
The classification
The primary abutments
The guiding planes
The anterior posterior tilt

3. Unmodified
Class III

4. Unmodified
Class III

5. GP 1
Primary abutments
GP 2
Unmodified
Class III

6. AP tilt

7. Support
Dual
Uniform

8. Primary supporting elements
GP 1
Primary supporting elements
GP 2

9. The Introduction of :
One rest = pivot
Two rests = fulcrum

11. Basic principle of design :
Cross-arch stabilization :
Indirect retention
Indirect support

12. Imaginary fulcrum line
GP 1
Imaginary fulcrum line
GP 2

13. GP 1 X
GP 2
Perpendicular bisector of fulcrum line to mark the most suitable sight for setting of indirect retention rests and indirect supporting clasps. X

14. Short span : triangular configuration
GP 1 X
GP 2 X
Short span : triangular configuration

15. Long span: trapezoidal configuration
GP 1
Long span: trapezoidal configuration X
GP 2 X

16. Connectors:
Major Connector
Minor Connector

17. Mesh
Minor connector
Mid palatal strap major connector

18. AP Palatal strap Ridged design Hygienic design Patient tolerance
6-8 mm
AP Palatal strap
Ridged design
Hygienic design
Patient tolerance

19. Retention : Direct retainers
Clasp assembly :
Minor connector
Rest
Retentive arm
Reciprocal arm

23. O : Outline
S : Support
C : Connector
A : &
R : Retention
OSCAR

24. E N J O Y