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   COMPOSITE CHEMISTRY

Dental composite is composed of a resin matrix and filler materials.  Coupling agents are used to improve adherence of resin to filler surfaces.  Activation systems including heat, chemical and photochemical initiate polymerization.  Plasticizers are solvents that contain catalysts for mixture into resin.

Monomer, a single molecule, is joined together to form a polymer, a long chain of monomers. Physical characteristics improve by combining more than one type of monomer and are referred to as a copolymer.  Cross linking monomers join long chain polymers together along the chain and improve strength.

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