When a tooth has lost healthy tooth structure and decay or a cavity has developed, we have choices of different materials to replace the hole created from the bacterial destruction. The most common white filling material used is a form of plastic called composite resin. Other filling materials of choice may include glass ionomer, amalgam/ silver, gold and porcelain/ ceramic. A mutual decision of the best material of choice is discussed during your examination appointment. After the decay or caries is removed, a bonding material is first place to help secure the thin subsequent layers of resin placed and cured by a special light source. Once the tooth structure is rebuilt by the filling material, the dentist will take the care to make sure the tooth is well shaped and polished so you will leave in comfort and to reduce the likelihood of tooth sensitivity after treatment.