In just two or three dental visits, a veneer can reverse years of stains caused by foods, caffeine and tobacco use. Special thin laminates, called veneers, can often be used to correct discolored, worn down, cracked and chipped teeth. Veneers can also be used to close unsightly gaps between teeth. Stronger types of veneers made of porcelain, also called composite veneers, typically last longer because they are bonded to the tooth. An impression of the tooth must be made and a veneer molded by a lab technician. Because veneers require a small amount of enamel to be removed, they are permanent and non-reversible. The process involves buffing the tooth, removing an extremely thin layer of the tooth to allow for the thickness of the veneer, an impression of the tooth, and final bonding of the veneer to the tooth with special cement. A special light is used to complete the process.