Lab 11: Chrome cobalt clasp design

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1
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What are the potential clasps we would use of a chrome cobalt?

Chrome cobalt clasps

  • Embrasure

  • Double embrasure

  • Ring clasp

  • Roach T

  • I-Bar

2
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Embrasure clasps: Pros and Cons

Embrasure clasp

Pros

  • Simple design

  • Good support and bracing

  • Easy to adjust

  • Aesthetics

Cons

  • May traumatize tooth with incorrect free end saddles

<p>Embrasure clasp</p><p>Pros</p><ul><li><p>Simple design </p></li><li><p>Good support and bracing </p></li><li><p>Easy to adjust </p></li><li><p>Aesthetics </p></li></ul><p>Cons</p><ul><li><p>May traumatize tooth with incorrect free end saddles</p></li></ul>
3
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Double embrasure clasps: Pros and Cons

Double embrasure clasps

Pros

  • Good support and bracing

  • Distributes load on several teeth

Cons

  • Minor connector is usually thin on occlusal surface and can fracture

<p>Double embrasure clasps</p><p>Pros</p><ul><li><p>Good support and bracing </p></li><li><p>Distributes load on several teeth </p></li></ul><p>Cons</p><ul><li><p>Minor connector is usually thin on occlusal surface and can fracture</p></li></ul>
4
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Ring clasps: Pros and Cons

Ring clasps

Pros

  • Good support and bracing

Cons

  • Can distort

  • Difficult to adjust

  • Cover large area of tooth

<p>Ring clasps</p><p>Pros</p><ul><li><p>Good support and bracing </p></li></ul><p>Cons</p><ul><li><p>Can distort </p></li><li><p>Difficult to adjust </p></li><li><p>Cover large area of tooth</p></li></ul>
5
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Roach T: Pros and Cons

Roach T clasps

Pros

  • Distal undercut can be used to prevent tooth trauma on free end RPDs

  • Good aesthetic, small area covered

Cons

  • Bracing not as good as circumferential type

  • Food trap

<p>Roach T clasps </p><p>Pros</p><ul><li><p>Distal undercut can be used to prevent tooth trauma on free end RPDs</p></li><li><p>Good aesthetic, small area covered </p></li></ul><p>Cons </p><ul><li><p>Bracing not as good as circumferential type </p></li><li><p>Food trap</p></li></ul>
6
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I-Bar: Pros and Cons

I-Bar

Pros

  • Allows denture movement during function to prevent tooth trauma

  • Good aesthetics

  • Minimal tooth contact

Cons

  • Poor bracing

  • Teeth need prep

<p>I-Bar</p><p>Pros </p><ul><li><p>Allows denture movement during function to prevent tooth trauma </p></li><li><p>Good aesthetics </p></li><li><p>Minimal tooth contact </p></li></ul><p>Cons </p><ul><li><p>Poor bracing </p></li><li><p>Teeth need prep </p></li></ul>

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