On average, the lifespan of a dental crown is put between 5 and 15 years. We have had patients whose crowns have lasted for over two decades. Generally speaking, we like to say that for at least 10-15 years you should be fine PROVIDING that you take good care of your crowns. This means that you have to protect your crowns from mechanical wear and follow good hygiene practices. More specifically, like a natural tooth, a crown can break, so you need to make sure you do not chew very hard food, ice, do not bite your nails or pencil ends, or exercise other type of strong mechanical force that could damage your crown. Furthermore, while cavities cannot damage the crown itself, cavities can affect the structure under the crown. This means that crowns or no crowns you need to BRUSH YOU TEETH twice a day, clean the space between your teeth every day, and have regular teeth cleaning sessions (at least every six months) at your dentist.