Porcelain veneers are placed over the front teeth to change color shape of the teeth. Veneers are ideal for teeth that are too small, too big, or have uneven surfaces. It is very common for people to have imperfect teeth, either oddly shaped teeth, chipped teeth, crooked teeth, teeth with small holes in them, or an inappropriate sized tooth or teeth that have an odd appearance. Veneers solve such irregularities and create a durable and pleasing smile. . Veneers are thin, custom-made shells crafted of tooth-colored materials designed to cover the front side of teeth. They're made by a dental technician, usually in a dental lab, working from a model provided by your dentist. You should know that this is usually an irreversible process, because it's necessary to remove a small amount of enamel from your teeth to accommodate the shell. Your dentist may recommend that you avoid some foods and beverages that may stain or discolor your veneers such as coffee, tea or red wine. Sometimes a veneer might chip or fracture. But for many people the results are more than worth it.