Effect of sucrose rinses on bacterial colonization on amalgam and composite

The effect of sucrose rinses on the bacteriology of early plaque on enamel, amalgam and composite was investigated. Three test persons rinsed with a 15% sucrose solution every hour for 12 h prior to the insertion of the test materials. Round disks of amalgam and composite were carried on the buccal surfaces of the upper molars for 2 1/2 h. Sucrose rinses were found to have an effect both on plaque composition and on the amount of plaque on composite, but not no enamel or on amalgam. A small increase in the number of Streptococcus mutans as well as a general increase in the number of bacteria were found.