Dental Materials

  1. a gold alloy that is 50% gold has how many karats

    D. 12
  2. the ada recognizes which three major categories of alloys?

    D. high noble, noble, base metal
  3. high noble metal classification must contain what pecent by wieght of gold

    B. 40%
  4. noble metal elements include all ofthe following except

    A. silver
  5. porcelain bonding alloys form oxides on their surfaces that chemically bond with the porcelain at high temperatures. which of the following metals may be added to the alloys to help form these oxides?

    C. indium or tin
  6. metal that is formed by casting into an ingot or bar and then is altered in its form by extruding or pressing it is known as

    B. wrought metal
  7. high noble alloys usually have which metals added to increase their strength

    D. silver or copper
  8. which type of orthodontic wire is more difficult to adapt as an arch wire becasue of its springiness and tendency to maintain its original shape?

    D. nickel titanium
  9. allergy to nickel

    B. occurs 10 times more often in women than in men
  10. solder has all of the following uses except

    B. repairing a hol ein the occlussal surface of a crown discovered at the periodic oral examination
  11. the purpose of a flux used during soldering is to

    B. remove oxides from the surface of the metals and blah blah blah read it above that one is long
  12. preformed metal posts are vailable in all of the following materials except

    D. gold
  13. the purpose of a post is to

    D. retain the core material
  14. which one of the following statements about cast posts is false

    D. they are used in practice far more often than preformed posts
Card Set
Dental Materials
chapter 10 review questions