White, composite fillings can cosmetically blend with the adjacent tooth structure much better than old metal fillings. This process is most effective when the decay is minor and in a place that does not regularly impact other teeth when chewing. It is a much more aesthetically pleasing option because it is a tooth-colored plastic and glass mixture that blends well with your natural teeth and can be customized to be the same color. Composites are also used for cosmetic improvements of the smile by changing the color of the teeth or reshaping disfigured teeth. As opposed to metal fillings, tooth colored fillings are bonded to healthy tooth structure.