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Planning the design for removable partial dentures

Planning the design for removable partial dentures. . Prof Dr.Ahlam El- Sharkawy Head of prosthodontic Department Pharos university in Alexandria. Principles and planning of removable partial denture designing. First stage– Outlining the saddle area.

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Planning the design for removable partial dentures

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  1. Planning the design for removable partial dentures . Prof Dr.AhlamEl-Sharkawy Head of prosthodontic Department Pharos university in Alexandria

  2. Principles and planning of removable partial denture designing • First stage– Outlining the saddle area. • Second stage—The support of the saddles • Third stage – The Retention. • Fourth stage –Joining the saddles and retainer units. • Fifth stage –Indirect retention. • Sixth stage– Bracing of the saddles. • Seventh stage– Resistance to anteroposterior movement

  3. OUTLINING THE SADDLE AREA

  4. OUTLINING THE SADDLE AREA Extension

  5. Type of support

  6. Position of rest:-

  7. Shape of the rest

  8. RETENSION • Clasping configuration

  9. Distribution of clasps.

  10. Distribution of clasps.

  11. Distribution of clasps.

  12. Occlusally Approaching Clasps • Aker Clasp • Reversed Aker clasp • RPA clasp • Back-Action clasp • Ring Clasp • Compound Clasp • Multiple Clasp • Extended-Arm Clasp

  13. Gingivally-Approaching Clasps • The T-Shape • The U-Shape • The L-Shape • The C-Shape • RPI Clasp

  14. The functional elements of the clasp • 1-The Retentive arm • 2-The Reciprocal arm • 3-The Occlusal rest • 4-The Minor connector

  15. CLASPS USED WITH BOUNDED SADDLES 1-Ring clasp 2-Gingivally approach 3- Aker clasp

  16. Clasps used with free end saddles. 1.Reversed Aker clasp

  17. Clasps used with free end saddles 2.Back-action clasp

  18. Clasps used with free end saddles 3.R P I CLASP RMesial rest PProximal plate II- bar retentive arm

  19. Clasps used with free end saddles 4.Gingivally Approaching Clasp.

  20. Clasps used with free end saddles 5.Combination clasp

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