Study Guide and Practice Questions
what are nano hybrids particle size? - ANS✔✔ 0.005-0.020 microns
how much is normal masticatory force? - ANS✔✔ 28,000lbs
which of the following restorative materials is most likely to fracture under compressive stress?
- ANS✔✔ porcelain
which restorative material is most soluble? - ANS✔✔ glass ionomer
corrosion is greatest concern for which of the following restorative materials? - ANS✔✔
amalgam
restorative material with values of thermal conductivity similar to enamel include - ANS✔✔
composite resin
patient has MOD amalgam placed on #30 and its in contact with gold crown on tooth#3. patient
complains of shock and metal taste - ANS✔✔ galvanism `
micro leakage responsible for - ANS✔✔ marginal staining
recurrent decay
post op sensitivity
esthetic materials used for restoration of enamel need high - ANS✔✔ vitality
color shades vary depending on incident light or source of light.
, effect is called - ANS✔✔ metamerism
term that describes intensity of color - ANS✔✔ chroma
major components of composite dental materials include all of the following except one:
coupling agent
fillers
bonding agent
resin matrix - ANS✔✔ bonding agent
composite resin are often classified according to - ANS✔✔ filler particle size
flowable composites are more difficult to polish than hybrid composites
true or false - ANS✔✔ false
Fillers are composed of all of the following except one. Which one is the exception?
glass
silica
quartz
alumina - ANS✔✔ alumina
coupling agent prevents fillers from sticking to teeth
true or false - ANS✔✔ false
saliva contamination of etched enamel does not increase wear of composite restoration
true or false - ANS✔✔ true