If you have an old, large filling in one of your back molars, chances are pretty good that the day will come when it needs to be replaced by a dental crown. Fillings, particularly the amalgam fillings that were so common in past decades, tend to fail over time. They lift away from the tooth, and they can also cause fine cracks to appear in the tooth.

Most dental crowns are designed to last for 10 to 15 years, and they can often last much longer, depending on how well cared for they are. Dental crowns are a common restoration at our Dee Why, NSW clinic, and here are some facts about them our patients might not know about.