title: A comparison of amalgam microleakage with a 4-META liner and copal varnish.
abstract: This in vitro study compared the microleakage of Class 5 amalgam restorations placed in extracted human teeth lined with a 4-META liner (Amalgambond), with similar restorations lined with copal varnish (Copalite). The restored teeth were stored in saline for 1 week, 6 months, and 1 year, then thermocycled, stained with 5% methylene blue, sectioned, and viewed using a light microscope. It was found that at 1 week and 6 months the 4-META group leaked significantly less than the copal resin group, but after 1 year there was no significant difference between groups.
authors.affiliation: Department of General Dentistry, College of Dentistry, University of Tennessee, Memphis, Tennessee, USA.
authors.forename: D S
authors.initials: DS
authors.lastname: Moore
authors.forename: W W
authors.initials: WW
authors.lastname: Johnson
authors.forename: I
authors.initials: I
authors.lastname: Kaplan
mesh_terms: D003722:Dental Alloys; D003723:Dental Amalgam; D003736:Dental Cavity Lining; D003763:Dental Leakage / Q000517:prevention & control*; D003764:Dental Materials; D006801:Humans; D012116:Resins, Plant; D018709:Statistics, Nonparametric; D013997:Time Factors
chemical_list: D003722:Dental Alloys; D003764:Dental Materials; D012116:Resins, Plant; C023806:Copalite; C033470:Dispersalloy; D003723:Dental Amalgam