Influence of amalgam, alloy, and mercury on the in vitro growth of Streptococcus mutans: I. Biological test system

A procedure is presented for the in vitro growth of Streptococcus mutans in a dextrose-beef extract medium. Growth was estimated spectrophotometrically. The amount of amalgam, alloy, or mercury that was added to the sealed test tube influenced the rate and extent of growth.