Natural tooth colored fillings, also known as composite fillings, are an alternative to traditional amalgam fillings. Benefits to composite fillings are: When preparing the tooth for a composite filling only the decay needs to be removed and not any healthy tooth structure. The composite filling is bonded to the tooth surface restoring its natural strength. Composite fillings can be matched to your natural tooth color so they blend in for a seamless smile. Some patients have noticed that their teeth are less sensitive to hot and cold when composite fillings are placed as opposed to amalgam fillings.