Bonding is a process in which an enamel-like material is applied to a tooth`s surface, sculpted to an ideal shape, hardened, and then polished for an ideal smile. This procedure usually can be accomplished in a single visit. Bonding is often performed in order to fill in gaps or change the color of your teeth. It typically only entails one office visit, and the results last for several years. Bonding is more susceptible to staining or chipping than other forms of restoration such as veneers. When teeth are chipped or slightly decayed, bonded composite resins may be the material of choice. Bonding also is used as a tooth-colored filling for small cavities and broken or chipped surfaces. In addition, bonding can be used to close spaces between teeth or cover the entire outside surface of a tooth to change its color and shape. Crowns, also known as caps, are used in cases where other procedures will not be effective. Crowns have the longest life expectancy of all cosmetic restorations, but are the most time consuming.
Composite fillings are a mixture of acrylic resin and finely ground glasslike particles that produce a tooth-colored restoration. Composite fillings provide good durability and resistance to fracture in small-to-mid size restorations that need to withstand moderate chewing pressure. Less tooth structure is removed when the dentist prepares the tooth, and this may result in a smaller filling than that of an amalgam. Composites can also be "bonded" or adhesively held in a cavity, often allowing the dentist to make a more conservative repair to the tooth. In teeth where chewing loads are high, composite fillings are less resistant to wear than silver amalgams. It also takes longer to place a composite filling.