To repair a small cavity, we first remove the decayed enamel, and then we fill in the space it left behind. Traditionally, this was done using a metallic substance called amalgam, but this always leaves a noticeable gray mark on a tooth. That’s why we’ve switched to composite resin, a strong and malleable substance that we can shade to perfectly match the surrounding enamel. The end result is a reliable restoration that you never have to worry about sticking out in your smile.