When the bacteria in your mouth feed on particles of sugar and starch that remain in your mouth after eating, they produce an acidic by-product that eats away to tooth enamel. Cavities form in the tooth enamel and, if left untreated, can work their way down into the dentin and pulp layers, causing significant discomfort and requiring invasive treatment. Dr. Tomasik can treat early cavities quickly and conservatively with tooth-colored fillings. Instead of the old-fashioned metal fillings of years past, white, composite resin fillings offer a natural look and an effective method for repairing and protecting your teeth.