Bonding is a composite resin material that can lighten stains, close up minor gaps, correct crooked teeth. and restore fractured or decayed teeth. Bonded fillings are used for smaller more conservative restorations and they are relatively cost effective compared to using porcelain materials. Silver/mercury fillings are thought to expand over time, cracking teeth and causing the need for more extensive dentistry such as crowns (caps) and even causing the need for root canals. On the other hand, bonding is an adhesive technique, and when used, the restoration chemically adheres to tooth structure strengthening it. Bonding material can be applied to sculpt, color and shape the tooth. Then a high-intensity light hardens the resin, and the tooth is finely polished; creating a natural looking, gorgeous smile.