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dental materials > dental metallurgy > Flashcards

dental metallurgy Flashcards

1
Q

what happens with work hardening

A

increase hardness, ultimate tensile strength and brittleness

decrease in ductility and resistnace to corrosion

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2
Q

what are the type of wrought metal alloy

A

stainless steel, nickel titanium

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3
Q

what are the properties of nickel titanium

A
  1. excellent corrosion resistance
  2. non magnetic
  3. high fatigue strength
  4. moderate impact resistance, moderate heat resistance
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4
Q

what does twinning plate allow

A

permanent deformation without breaking of atomic bonds, responsible for shaped memory and superelasticity

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5
Q

What is shape memory

A

deformed when cold and returns to predeformed shape when heated

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dental materials (20 decks)

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