Composite resin, or tooth-colored restoration (filling), provides good durability and resistance to fracture in small to medium-sized restorations. It can be used for anterior (front) and posterior (back) teeth and mimics the natural appearance of your tooth structure. In addition to restoring teeth that have fractured or decayed, tooth-colored restorations can be used to change the size, color and shape of your teeth. This quality is particularly useful in closing gaps between teeth, repairing chipped teeth and making teeth appear to be more straight or even.