In vitro studies of the tensile bond strengths of a zinc polycarboxylate cement and an unfilled diacrylate resin to stainless steel have been performed. The zinc polycarboxylate cement was found to exhibit good adhesion to stainless steel. However, the diacrylate resin adhered poorly to the stainless steel. This was probably due to the poor wetting of the stainless steel by the diacrylate resin. The clinical implications of these observations are discussed.
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