Traditional dental restoratives, or fillings, may include gold, porcelain, or composite. Newer dental fillings include ceramic and resin compounds that mimic the appearance of natural teeth. Composite resins can be used instead of mercury-based amalgam. Many patients prefer bonded composite fillings because the white color is much less noticeable than the silver amalgam. Bonding fillings can be used on front or back teeth, depending on the location and extent of tooth decay.