Composite resin is the most widely used tooth coloured filling material. The tooth is etched with acid before placing the filling in layers. Each layer of filling is typically hardened using a ...

Amalgam is an alloy that contains mercury, silver, copper, tin and sometimes zinc. Mostly preferred for fillings in back teeth, can last from seven years to longer. It is the least expensive kind of ...

Getting a filling isn't always the end of a tooth's cavity problems. Sometimes, bacteria is able to get down between the filling and the surface of the tooth, causing another cavity to occur. A new ...

Learn how dental fillings work, the different types available, and when alternatives like crowns or inlays may be needed.

A new study finds potent antibacterial capabilities in novel dental restoratives, or filling materials. Tooth decay is among the costliest and most widespread bacterial diseases. Virulent bacteria ...

The debate over whether mercury in dental fillings can leach out and cause a wide range of health problems — from multiple sclerosis and cancer to Alzheimer's disease — refuses to die down. The ...