White fillings, also called composite or glass-ionomer fillings, are made from tooth-coloured materials that restore the natural appearance of a decayed or previously filled tooth. Because they blend well with tooth enamel, it is recommended if the teeth to be restored are near the front of the mouth.
Other types of white fillings include composite inlays and porcelain inlays and onlays. Inlays and onlays are used to restore teeth that are badly damaged by decay or wear. They may be applied to the chewing surfaces of the back teeth when esthetics is of concern.