Dental Materials

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Author:
cassiedh
ID:
63850
Filename:
Dental Materials
Updated:
2011-02-03 08:31:49
Tags:
ch3review
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Description:
chapter 3 review questions
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  1. a defining characteristic of a solid is that it has
    a.shape and volume
    b shape only
    c. neither shape nor volume
    d. volume but no shape
    a. shape and volume
  2. the most stable primary bonds
    A. have random form
    B. are amorphous
    C. have mixed physical structure
    D. have regular crystalline structures
    D. have regular crystalline structures
    (this multiple choice question has been scrambled)
  3. the correct term for describing when an applied stress is proportional to a resulting strain is
    A. toughness
    B. elasticity
    C. ultimate strength
    D. ductility
    C. ultimate strength
    (this multiple choice question has been scrambled)
  4. when the weight of a material increases in relationship to its volume this is described as
    A. hard
    B. dense
    C. elastic
    D. resilient
    B. dense
    (this multiple choice question has been scrambled)
  5. hardness determines the materials ability to
    A. deform an object
    B. break an object
    C. be easily compressed
    D. penetrate an object
    D. penetrate an object
    (this multiple choice question has been scrambled)
  6. when deformation is not permanent and a material recovers it has good?
    A. malleability
    B.toughness
    C. elasticity
    D. ductility
    C. elasticity
    (this multiple choice question has been scrambled)
  7. resistance to flow is known as
    A. film thickness
    B. curing
    C. viscosity
    D. density
    C. viscosity
    (this multiple choice question has been scrambled)
  8. thixotropic materials are those that
    A. flow at higher temps
    B. have poor viscosity
    C. flow under mechanical forces
    D. flow at lower temps
    C. flow under mechanical forces
    (this multiple choice question has been scrambled)
  9. indirect restorative materials would include all of the following except
    A. porcelain veneers
    B. gold crowns
    C. porcelain crowns
    D.amalgam restorations
    D. amalgam restorations
    (this multiple choice question has been scrambled)
  10. mixing time is the length of time from
    A. beginning of mixing to the initial set time
    B. the beginning of the mixing to the end of setting time
    C. the beginning of mixing to the end of working time
    D. beginning of mixing to the beginning of working time
    D. beginning of mixing to the beginning of working time
    (this multiple choice question has been scrambled)
  11. a material mixed slowly on a cooled glass surface will
    A.have shorter working and setting time
    B. have a shorter working and longer setting time
    C. have a longer setting and working time
    D. have a longer working and shorter setting time
    C. have a longer setting time and working time
    (this multiple choice question has been scrambled)

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