Once a tooth has been crowned, your oral hygiene has to be kept to a high standard. Brushing at least twice a day, using a mouthwash and flossing are all important. Regular dental check ups are also vital to allow your dentist to monitor the crown margins. Although a crown will never get decay on it, the underlying tooth can if not kept clean around the gum level. The exact life expectancy of a crown changes from person to person but if a crown is looked after, they can last a long time.
Smile makeover shown below: