Veneers are ultra-thin, custom-made, fine facings made of porcelain that are bound onto the natural tooth. The primary function is to improve the appearance of the tooth, and they can involve very little preparation of your own natural tooth. That is why they are used instead of crowns in cases where the teeth are chipped, discolored or crowded. Unlike crowns, which are usually placed on premolar and molar teeth, veneers are most frequently used on the upper front teeth. Veneers have almost exclusively aesthetical function and provide a person with a wonderful, movie-star smile.