Dental materials Midterm TCDHA
UPDATED ACTUAL Exam Questions and
CORRECT Answers
material subject to repeated stress such as in mastication may be subject to fracture due to -
CORRECT ANSWER - fatigue failure
Galvanism - CORRECT ANSWER - The phenomenon of electric current being
transmitted between two dissimilar metal
Thermal conductivity - CORRECT ANSWER - The rate at which heat flows through
material over time
internal reaction to an externally applied force is called - CORRECT ANSWER - stress
Retainer - CORRECT ANSWER - part of bridge that fits over the abutment
Pontic - CORRECT ANSWER - false/artificial tooth
Abutment - CORRECT ANSWER - supporting natural tooth
esthetic materials used for restoration of enamel need high? - CORRECT ANSWER -
vitality
leakage of fluids and debris extending along the tooth restoration interface is called - CORRECT
ANSWER - microleakage
excessive film thickness may cause - CORRECT ANSWER - improper seatiing of
restoration
, the safe interaction of a dental material with rest of the body is defined as the materials -
CORRECT ANSWER - biocompatibility
which of the following restorative materials is most likely to fracture under compressive stress? -
CORRECT ANSWER - porcelain
most soluble restorative material - CORRECT ANSWER - glass ionomer
crossosion is of the greatest concern for which restorative material - CORRECT
ANSWER - amalgam
surface discoloration of a metal restoration is called - CORRECT ANSWER - tarnish
restorative materials with values of thermal conductivity similar to enamel include - CORRECT
ANSWER - composite resin
defining characteristic of a solid is that it has - CORRECT ANSWER - shape and volume
most stable primary bonds - CORRECT ANSWER - have regular crystalline structures
correct term for describing the macimal amount of stress a material can withstand without
breaking is - CORRECT ANSWER - ultimate strength
when the weight of a material increases in relationship to its volume, this is described as -
CORRECT ANSWER - dense
hardness determines the materials ability to - CORRECT ANSWER - penetrate an object
UPDATED ACTUAL Exam Questions and
CORRECT Answers
material subject to repeated stress such as in mastication may be subject to fracture due to -
CORRECT ANSWER - fatigue failure
Galvanism - CORRECT ANSWER - The phenomenon of electric current being
transmitted between two dissimilar metal
Thermal conductivity - CORRECT ANSWER - The rate at which heat flows through
material over time
internal reaction to an externally applied force is called - CORRECT ANSWER - stress
Retainer - CORRECT ANSWER - part of bridge that fits over the abutment
Pontic - CORRECT ANSWER - false/artificial tooth
Abutment - CORRECT ANSWER - supporting natural tooth
esthetic materials used for restoration of enamel need high? - CORRECT ANSWER -
vitality
leakage of fluids and debris extending along the tooth restoration interface is called - CORRECT
ANSWER - microleakage
excessive film thickness may cause - CORRECT ANSWER - improper seatiing of
restoration
, the safe interaction of a dental material with rest of the body is defined as the materials -
CORRECT ANSWER - biocompatibility
which of the following restorative materials is most likely to fracture under compressive stress? -
CORRECT ANSWER - porcelain
most soluble restorative material - CORRECT ANSWER - glass ionomer
crossosion is of the greatest concern for which restorative material - CORRECT
ANSWER - amalgam
surface discoloration of a metal restoration is called - CORRECT ANSWER - tarnish
restorative materials with values of thermal conductivity similar to enamel include - CORRECT
ANSWER - composite resin
defining characteristic of a solid is that it has - CORRECT ANSWER - shape and volume
most stable primary bonds - CORRECT ANSWER - have regular crystalline structures
correct term for describing the macimal amount of stress a material can withstand without
breaking is - CORRECT ANSWER - ultimate strength
when the weight of a material increases in relationship to its volume, this is described as -
CORRECT ANSWER - dense
hardness determines the materials ability to - CORRECT ANSWER - penetrate an object
