There are a number of reasons for replacing fillings including an opening, or leaking, where the filling meets the tooth, new decay, or fracture of a filling. Appearance is another good reason to replace fillings. Over time your teeth change shade, and fillings that used to match your teeth can really stand out. Or you may decide to bleach your teeth and older fillings that used to match are now too dark. With advances in filling materials and the ability to bond filling material to the teeth, it’s possible to get a much better match between teeth and fillings than ever before. You don’t need to live with a conspicuous mismatched filling in a front tooth anymore!