Background& Objective: Acrylic resin, poly-methacrylate provisional materials, have been no longer used
because of low strength, poor marginal fit, low resistance, and color stability. New resin systems, such as
higher (meth) acrylates, and di-meth
acrylate were developed to improve the mechanical and physical
properties.
Investigate polymerization shrinkage-strain, and Exo-thermic peak-temperatures of three new provisional
materials based on di-methacrylate, and one of mono-methacrylate.
