Microleakage of dentin/amalgam alloy bonding agents: results after 1 year.
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.
Meiers
J C
JC
University of Connecticut Health Center, School of Dental Medicine, Department of Restorative Dentistry and Endodontics, Farmington 06030-1715, USA.
Turner
E W
EW
D000704:Analysis of Variance; D003723:Dental Amalgam / Q000737:chemistry*; D003736:Dental Cavity Lining; D003763:Dental Leakage / Q000517:prevention & control*; D018772:Dental Marginal Adaptation; D003793:Dental Restoration, Permanent; D003804:Dentin / Q000187:drug effects; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D005069:Evaluation Studies as Topic; D006801:Humans; D008422:Materials Testing; D018709:Statistics, Nonparametric
D017220:Dentin-Bonding Agents; D003723:Dental Amalgam