This cosmetic, restorative procedure involves bonding tooth-coloured restorative material to teeth in order to restore them, or sometimes simply to mask discolouration or to restore fractured or chipped teeth, achieving a beautiful esthetic result. Veneers are also available in porcelain – a thin layer that is bonded to healthy tooth structure. With this procedure, tooth colour can be changed to provide the patient with a translucent, uniform, white colour, as well as to fill in gaps where necessary or alter the appearance of tooth contour (to make them more uniform).