Restoring Fluoride Anticavity Mouthwash works to remineralize soft spots, strengthen enamel to prevent tooth decay, and freshen breath. Adults who use Anticavity fluoride rinses like Restoring can reduce cavities up to 70percent more than brushing with a fluoride toothpaste alone. Enamel is the thin outer covering of the tooth that protects the teeth from daily use such as chewing, biting, crunching, and grinding. Tooth enamel is ually the hardest tissue in the human body. Although enamel is a great protector of the teeth it can chip, crack, and even erode. A fluoride mouthwash is a great way to help protect teeth from enamel erosion and decay. When a tooth surface is weakened by decay, fluoride can be absorbed into the weakened tooth surfaces to help strengthen the enamel. Amazingly, the new tooth material created by this strengthening process is even more durable than the original.