Fitchie J G, Reeves G W, Scarbrough A R, Hembree J H
Oper Dent. 1990 Jul-Aug;15(4):136-40.
In a study in vitro Copalite and Barrier cavity varnishes were applied to the walls of class 1 prepared cavities before placing Tytin, a high-copper amalgam. Tests with 45Ca and autoradiographs showed that at six months only Copalite was effective in preventing microleakage. At one year neither Barrier nor Copalite was preventing leakage.
在一项体外研究中，在放置高铜银汞合金Tytin之前，将科帕利特（Copalite）和屏障洞衬漆涂覆在I类预备洞的洞壁上。用45Ca进行的测试和放射自显影片显示，在六个月时，只有科帕利特能有效防止微渗漏。在一年时，屏障漆和科帕利特都不能防止渗漏。
