Dentists use a variety of materials for fillings like resin, gold, porcelain, silver amalgam ( a combination of mercury, silver, tin, zinc and copper).u003cstrongu003e u003c/strongu003eAll of these filling materials are strong, durable and 100% safe! At Rockwest Dental Clinic, we use composite resin for our restorative fillings because they look extremely natural and will blend in with the rest of your teeth.