Temporary Materials
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what are the types of temporary materials
PMMA PEMA bis-acryl composite UDMA
what is pmma
mono-functional monomer linear polymer
what is the best way to review a product
journals as they are peer reviewed
what does the zack and cohen experiment measure
temperature effect on pulp
what does a 2 degree increase do to pulp
nothing
what does a 5.5 degree increase do to pulp
tissue changes thermal trauma
what does an 11 degree increase do to pulp
irreparable damage
what is pulpal damage affected by
duration of temperature rise experienced
what did the baldissara experiment do
take two teeth from same person and subject to thermal stimulus (one in vivo, one in vitro)
what did the baldissara experiment discover
increase of 11 degrees will not damage the pulp as there are no signs of inflammation
what is the coffee test
after three days in coffee what colour does the temporary material go to
what does low polymerisation shrinkage of a temporary material give
good clinical fit of temporary restoration
what are the advantages of PMMA
self curing goof marginal fit good transverse strength
what are the disadvantages of PMMA
poor abrasion resistance high shrinkage high thermal release free monomer toxic