Silver (amalgam) fillings
Silver fillings are composed of dental amalgam, a mixture of metals that has been used for decades to treat dental caries. Amalgam is strong and long-lasting, which is why it has often been used on back teeth that take the most chewing force. Its main drawbacks are its dark color, and that the tooth usually has to be shaped a little more to hold it in place.
White (composite) fillings
White fillings are made of a tooth-colored composite resin. They are more attractive since they match the color of your tooth, and they bond with the tooth, which helps seal out bacteria and often allows us to preserve more of the natural tooth. Composite can also be used to repair chips and reshape teeth.
How they compare
- Appearance: composite blends in; amalgam is visible when you smile or laugh.
- Tooth structure: composite usually needs less drilling because it bonds to the tooth.
- Durability: both last for years; very large fillings on back teeth may be better served by an onlay or crown.
- Sensitivity: either can cause mild, short-lived sensitivity to hot and cold after placement.
Should old silver fillings be replaced?
A sound amalgam filling that isn’t causing problems doesn’t necessarily need to be removed. We recommend replacing a filling when it is cracked, worn, leaking or has new decay around its edges, or if you’d like a more natural look. If you are pregnant, nursing or have a known sensitivity to metals, let us know so we can talk through your options.
Caring for your fillings
Brush and floss as usual, avoid chewing ice and very hard foods, and keep up with checkups so we can spot wear early. After a new bonded filling, it’s best to avoid very hot or cold foods for a few days.
Questions about your own teeth? Call Shrewsbury Dental Group at (732) 741-8707 or book a visit online (opens in a new tab). This article is general information and isn't a substitute for an exam.