Then an impression is taken of your teeth. This impression is then sent to the dental laboratory which actually fabricates the Porcelain Veneer. They are then returned to the dentist, who during your second appointment will bond the veneer to your teeth. The advantage to you as a patient is that unlike having a crown, with the Porcelain Veneer less of the tooth is reduced, and yet excellent aesthetics can be acheived. Ask your dentist if you are a candidate for Porcelain Veneers.
Veneers are much like false fingernails.
Veneers are very thin, and are simply cemented to the front of your tooth, creating a porcelain facing.