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Health, 23.09.2019 10:10 gobbler80

34. most cements are mixed on a polycoated mix pad. what property of zinc phosphates requires that they be mixed on a glass slab?
a. low viscosity
b. exothermic
c. high viscosity
d. highly acidic
35. how many planes of analgesia are there in the administration of nitrous oxide?
a. seven
b. three
c. four
d. five
36. when a custom tray is fabricated from self-cure acrylic resin, the tray must sit for hours after fabrication before it should be used.
a. 16
b. 8
c. 24
d. 4
37. what item is used to hold the matrix band in contact with the interproximal area of the preparation?
a. retainer
b. cotton roll
c. matrix
d. wedge
38. which of the following is not part of the anesthetic syringe?
a. loading coil
b. threaded tip
c. harpoon
d. piston
39. adding more water than recommended to mix dental stone will lead to a
a. weaker, faster-setting stone.
b. stronger, slower-setting stone.
c. weaker, slower-setting stone.
d. stronger, faster-setting stone.
40. which of these restoratives would need to be placed in 2.5 mm increments?
a. light-cure composite
b. amalgam
c. resin ionomer
d. self-cure composite
41. which of these materials is not used as a filler in composites?
a. quartz
b. silver
c. glass
d. silica
42. which of the following is another way to write the term nitrous oxide?
a. no2
b. no
c. n2o
d. n2o2
43. the base of a dental cast is trimmed using
a. a vibrator.
b. boxing wax.
c. a model trimmer.
d. a hydrocolloid conditioner.
44. which of these instruments is used to create the anatomy in an amalgam restoration?
a. carver
b. excavator
c. burnisher
d. carrier
45. which of the following agents are resistant to antibiotics?
a. gram-negative bacteria
b. parasites
c. gram-positive bacteria
d. viruses
46. which of the following is the most commonly used inhalational agent in dentistry?
a. halothane
b. diazepam
c. enflurane
d. nitrous oxid
47. all the following are viscosities that are provided with polyvinylsiloxanes, except
a. medium-bodied.
b. putty.
c. light-bodied.
d. rigid-bodied.
48. which of the following is not an advantage in administering nitrous oxide?
a. easy to administer
b. rapid recovery
c. useful with the handicapped
d. easy to use
49. the gauge of a needle is defined by its
a. length.
b. thickness.
c. density.
d. strength.
50. vacuum molding can be used for all the following techniques, except
a. custom trays.
b. lost wax process.
c. bleaching mouth guards.
d. nightguards.

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