A dental crown can last between five and 15 years, depending on the type of material, the amount of wear and tear, and your oral hygiene habits. To take care of your dental crown, you should brush your teeth twice a day, floss daily, and visit your dentist regularly for check-ups and cleanings. You should also avoid biting on hard or sticky foods, chewing ice, or using your teeth as tools, as these can damage your crown. If you notice any signs of problems with your crown, such as pain, sensitivity, looseness, or chipping, you should contact your dentist as soon as possible.