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PLANNING THE DESIGN FOR REMOVABLE PARTIAL DENTURES (PART 2). Prof Dr.Ahlam El-Sharkawy Pharos university in Alexandria Pharos university in Alexandria.

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Presentation on theme: "PLANNING THE DESIGN FOR REMOVABLE PARTIAL DENTURES (PART 2). Prof Dr.Ahlam El-Sharkawy Pharos university in Alexandria Pharos university in Alexandria."— Presentation transcript:

1 PLANNING THE DESIGN FOR REMOVABLE PARTIAL DENTURES (PART 2). Prof Dr.Ahlam El-Sharkawy Pharos university in Alexandria Pharos university in Alexandria

2 4- Joining the saddles and retainer units

3 :Joining the saddles and retainer units Mandible 1. Lingual Plate Major Connector 2. Lingual Bar Major Connector

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6 3. Double lingual bar

7 Joining the saddles and retainer units Maxilla Ring design

8 Palatal horseshoe Palatal strap

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11 FIFTH STAGE Indirect Retainers

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25 Factors influencing effectiveness of indirect retainer: 1-Distence from the fulcrum line, 2-Effectiveness of tooth support. 3-Effectiveness of direct retainers. 4-Regidity of the connector supporting the indirect retainer. 5- Indirect retainer must be rigid.

26 Resistance: means resistance to antero-posterior movement. In the mandible It come from… 1. Posterior slope of retromolar area. 2. Mesialy placed occlusal rest. 3. Embrassure hook. 4. In Maxilla: 5. It come from… Posterior placed occlusal rests – Anterior slop of the palate

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