Quantification of marginal leakage of amalgam restorations in vitro.

Abstract

A method is described to quantify marginal leakage of amalgam restorations in vitro as a function of time. The method consists of the determination of the amount of nitrogen gas passing through the margins of the restoration at 2 atm. pressure in 30 min. The method described needs about sixteen specimen per experiment. The standard error is 20-30% of the… (More)

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