Dental bonding is a procedure in which a tooth-coloured composite resin material (a durable plastic material) is used for structural and cosmetic purposes to improve your smile. It is applied like a fine soft clay and hardened with a special light which ultimately “bonds” the material to the tooth to restore or improve a smile.
Dental bonding is an option that can be considered to:
- repair decayed teeth (composite resins are used to fill cavities)
- repair chipped or cracked teeth
- improve the appearance of discoloured teeth
- close spaces between teeth
- make teeth look longer
- change the shape of teeth
- be a cosmetic alternative to amalgam fillings
- protect a portion of the tooth’s root that has been exposed when gums recede
Little advance preparation is needed for dental bonding. Anesthesia is often not necessary unless the bonding is being used to fill a decayed tooth. Your dentist will use a shade guide to select a composite resin color that will closely match the colour of your tooth.
Next, the surface of the tooth will be lightly roughened with an etching liquid to help the bonding material adhere to the tooth. The tooth-colored, puttylike resin is then applied, molded and smoothed to the desired shape. An ultraviolet light or laser is then used to harden the material, after which, the dentist will further trim and shape it, and polish it to match the sheen of the rest of the tooth surface.
The procedure takes about 30 to 60 minutes per tooth to complete.
Bonding can be best suited for small cosmetic changes, for temporary correction of cosmetic defects, and for correction of teeth in areas of very low bite pressure (for example, front teeth). Consult with your dentist about the best cosmetic approach for your particular problem.