Dental Materials

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Author:
sthomp88
ID:
63791
Filename:
Dental Materials
Updated:
2011-02-02 23:21:06
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Chapter three
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week three
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  1. ionic bonds, covalent bonds, metallic bonds
    primary bonds
  2. hydrogen bonds, van der vaals bonds
    secondary bonds
  3. hard and likely to break or crack
    brittleness
  4. the measure of the weight of a material compared with its volume
    density
  5. the resistance of a solid to penetration
    hardness
  6. the maximum amount of stress a material can withstand without breaking
    ultimate strength
  7. the ability of a material to recover its shape completely after deformation from an applied force
    elasticity
  8. a material's resistance to deformation
    stiffness
  9. the greatest stress a structure can withstand without permanent deformation
    proportional limit
  10. the resistance of a material to permanent deformation
    resilience
  11. the ability of a material to resist fracture
    toughness
  12. the ability of an object to be pulled or stretched under tension without rupture
    ductility
  13. the ability to be compressed and formed into a thin sheet without rupture
    malleability
  14. the strength of a material at fine margins
    edge strength
  15. the ability of a liquid material to flow
    viscosity
  16. property of a liquid to flow more readily under mechanical force
    thixotropic
  17. restorations placed directly into a cavity preparation
    direct restorative material
  18. materials used to fabricate restorations outside the mouth that are subsequently placed into the mouth
    indirect restorative material
  19. the amount of time allotted to bring the components of a material together into a homogenous mix
    mixing time
  20. the time permitted to manipulate the material in the mouth
    working time
  21. the time at which the material can no longer be manipulated in the mouth
    initial set time
  22. the time at which the material has reached ins ultimate state
    final set time
  23. materials that set through a timed chemical reaction with the combination of a catalyst and base
    chemical set materials
  24. materials that require blue light source to initiate a reaction
    light-activated materials
  25. materials that polymerize by a chemical reaction when the material is mixed with a catalyst or initiated by exposutre to a blue light, or by a combination of chemical or light reaction
    dual set materials
  26. the useful life of a material before it deteriorates or changes in quality
    shelf life

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