Dentures Processing

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Author:
emm64
ID:
205594
Filename:
Dentures Processing
Updated:
2013-03-07 01:02:08
Tags:
dentures2 processing
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Description:
dentures2 processing
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  1. What are 2 methods for denture processing?
    • injection molding
    • convention packing
  2. What are the reqs for denture resin?
    • stiffness,¬†low creep: occlusion, minimize uneven loading
    • strength, resilience: mastication, impact
    • biologically inert
    • resist oral environment
  3. What are different types of denture base materials?
    • heat cured:
    • heat cured, rubber reinforced
    • heat cured, fiber reinforced
    • auto cured: low solubility, water uptake, dimensionally stable, accurate
    • injection molded
    • light activated
  4. Which denture base has least shrinkage?
    light cured (3% vs 6% cold, heat cured)
  5. What is the heat cure rxn?
    • polymer & peroxide initiator (powder) +
    • monomer & inhibitor (liquid) +
    • heat
    • ->> polymer + heat (reaction)
  6. Adv of injection molding?
    • less distortion during processing
    • minimal pin opening
    • -->> lab remount simplified
  7. What is flasking injection channel requirements?
    3-5mm diameter 1 for max, 2 for mand
  8. Flasking process steps
    • 1. complet festooning
    • 2. seal to cast
    • 3. remove from mounts
    • 4. place in flasks partially filled with stone
    • 5. coat teeth with improved stone
    • 6. fill and close
    • 7. boil out: wax and record base
    • 8. alcote stone but not teeth
    • 9. mix polymer 20g polymer, 30ml monomer for 5 minutes room temp
    • 10. assemble and clamp flask
    • 11. mount pressure apparatus
  9. Lab remount purpose
    • 1. correct processing errors
    • 2. restore VDO
    • 3. restore centric and bilateral balanced occlusion

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