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MOISTURE INSENSITIVE PRIMERS

    • Excess interfacial water ionizes carboxylic group forming hydrogen bonded dimers  A reversible breaking & reforming of calcium –poly alkenoic acid complexes with enamel providing some stress relaxation capacity. Thus a dynamic equilibrium occurs at the interface incorporating water in the process & thereby minimizes the detrimental plasticizing effect of water.
    • These products requires rather than tolerate moisture for proper polymerization A recent product based on cynoacrylate formulation has demonstrated superior properties.

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