There are several different types of dental fillings and the dentist will discuss which is best for you depending on the location of the restoration in your mouth, the extent of the repair, whether you have any allergies, and your budget.
Amalgam (or silver) fillings combine silver, copper, tin and mercury to create a strong and stable filling material. It is durable, easy to use, highly resistant to wear and relatively inexpensive compared with other materials. Amalgam fillings are recommended for restoring teeth further back in the mouth and out of sight due to their dark colour.
Composite fillings are made up of acrylic resin and finely ground, glasslike particles. This produces the most natural appearance for your restoration. Composite fillings provide durability and resistance to fracture in small to mid-sized restorations that withstand moderate chewing pressure. These fillings don’t last as long as other types as they are more prone to wearing over time.
Glass Ionomer Fillings:
Glass ionomer fillings are tooth-coloured and easily bond with tooth tissue. They slowly release a fluoride over time to help prevent decay under and around the filling. These look natural, as they can easily be made to suit your tooth colour, but they are not recommended for loadbearing teeth as they can wear easily.
Gold Inlays & Onlays:
Gold fillings are custom made in a laboratory before being cemented into place. They work well with gum tissues and can last more than 20 years if taken care of. Gold is considered the best filling material, but it is often the most expensive option.
Porcelain fillings have a similar cost to gold and are also produced in a lab before being bonded to the tooth. They are a popular choice due to their ability to be matched to the colour of the natural tooth and their stain resistance.