Although they do cost a little extra, resin fillings have a number of huge advantages over metal fillings:
- They are the same color as your tooth, so nobody can tell you have fillings at all.
- They bond to your tooth from the inside, actually making it stronger.
- They don't expand and contract like metal fillings can.
- They don't contain any mercury.
In addition to filling cavities, composite resin fillings can also be used to make repairs to teeth including fixing teeth damaged by erosion and filling in chips.