In vitro staining of resin composites by liquids ingested by children.

Purpose: The purpose of this study was to compare the influence of various children's drinks on the discoloration of dental resin composites.

Methods: Ninety-six disks (3-mm thick, 10 mm in diameter) were prepared from 3 types of composite: (1) submicron; (2) nono; and (3) microhybrid. After polishing and obtaining baseline data, they were equally divided into 4 groups and immersed into 1 of 4 liquids at 37 degrees C: (1) distilled water; (2) Kool-Aid Jammers (grape flavor); (3) Coca-Cola; or (4) snow cone syrup (banana flavor).