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  • Title: Microleakage of dentin/amalgam alloy bonding agents: results after 1 year.
    Author: Meiers JC, Turner EW.
    Journal: Oper Dent; 1998; 23(1):30-5. PubMed ID: 9610330.
    Abstract:
    The purpose of this study was to evaluate the 1-year results of the dentin bond (DBS)/viscous resin liner combinations Amalgambond Plus, Tenure/Panavia, Syntac/Dual Cem, and All-Bond 2/Liner F in reducing microleakage in class 5 cavity preparations restored with an admixed or a spherical amalgam alloy and to compare these results to the previously reported short-term (4-day) data from this same study. Class 5 cavity preparations with occlusal margins in enamel and gingival margins in cementum were prepared on extracted human molar teeth. Prepared teeth were distributed randomly into 12 treatment groups (n = 10) consisting of the various DBS/ liners, Copalite, and no liner for each alloy. Samples were stored in saline for 12 months, thermocycled, and stained with dye. Restorations were sectioned and microleakage scored. The DBS/liner combinations, with the exception of Syntac/Dual Cem, had significantly less microleakage with both alloys than Copalite or no liner. Comparing short-term to long-term results within the DBS/liners, only Tenure/ Panavia with Tytin had a significant increase in microleakage scores. These data indicate DBS/ liner combinations can provide significant protection against microleakage under high-copper amalgam alloys for up to 1 year.
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