Tooth veneers are thin, custom-made shells made of composite material or porcelain that are bonded to the front teeth to treat issues like chipped, discolored, or crooked teeth. They are also used to close gaps between teeth. Veneers have become a popular alternative to other treatments like crowns because they are less expensive and easier to install while still providing good cosmetic and functional results. The success of veneers depends on the patient's bite and budget.