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Pubmed for Handhelds

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  • Title: Tensile bond strength of polyvinyl siloxane impressions bonded to a custom tray as a function of drying time: Part I.
    Author: Cho GC, Donovan TE, Chee WW, White SN.
    Journal: J Prosthet Dent; 1995 May; 73(5):419-23. PubMed ID: 7658389.
    Abstract:
    Time-dependent bond strength studies of two polyvinyl siloxane impression materials to acrylic resin disks with their respective adhesives were studied to determine the optimal time for maximum bond strength. Six groups were tested with varying adhesive dry times of 0, 7, 15, and 60 minutes and 8 and 24 hours before testing. The results indicated that the bond strength of the adhesive increased at least twofold from time zero to 7 minutes adhesive dry time and peaked at 60 minutes for one of the materials and at 8 hours for the other. Bond strengths increased rapidly to the 15-minute test interval and then seemed to plateau. Both materials exhibited decreased adhesive bond strengths at 24 hours.
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