Temporary materials
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What are the types/examples of temp materials
PolyMethylMethAcrylate (PMMA) eg Jet PolyEthylMethAcrylate (PEMA) eg Trim II, Snap Bis-acryl Composite eg Protemp4, Quicktemp UrethaneDiMethAcrylate (UDMA) eg Provipont DC
What are the benefits to PMMA/jet
Powder/liquid formulation Self-curing Good marginal fit Good transverse strength Polishable
What are the downsides to PMMA/jet
poor abrasion resistance high shrinkage high thermal release free monomer may be toxic
What are types of product literature
Brochures Web-sites Product profile
What is the baldissara expirement
One tooth was exposed to the thermal stimulus believed to be harmful, -symptomatologically monitored for a period ranging from 68 to 91 days, -extracted and examined histologically to identify possible signs of damage to the pulp (in vivo); Second tooth extracted -exposed to the same thermal stimulus as tooth 1 -in order to assess the temperature increase induced in tooth 1 (in vitro) - ie record temperature profile applied
What did the baldissara experiment conclude
Increase of 11 degrees held for up to 170secs will not damage the pulp
Which temp materials have the highest temp rise
Integrity and Protemp G
What temp material keeps its colour best after submersion in coffee
Protemp 4 Structur premium is worst
What polymerisation value is ideal for a temp restoration
Low polymerisation shrinkage
What materials have the lowest shrinkage
Protemp tm crown Protemp G Luxatemp
What materials have the best compressive strength
Protemp 3 G Protemp G/luxatemp
Which materials have the best abrasion resistance
Luxatemp Structur/protemp3 G
What materials have the smoothest surface
Luxatemp Protemp 3 G