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A comparison of amalgam microleakage with a 4-META liner and copal varnish
D S Moore1, W W Johnson, I Kaplan
1Department of General Dentistry, College of Dentistry, University of Tennessee, Memphis, Tennessee, USA.
The International Journal of Prosthodontics
|September 1, 1995
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.