Before dental veneers can be placed on the teeth, the surface of the teeth must be prepared for bonding. After administering a local anesthetic, your dentist will buff away approximately half a millimeter from the surface of the teeth. You’ll then bite into a mold that will be used to form your veneers in a dental lab. When the veneers are ready, you’ll be asked to return to have them fitted, bonded and adjusted for shape and color.