A single dental crown is the most common restorative treatment, according to the American College of Prosthodontics. Placing a custom-made cap over the surface of a tooth provides preventive, restorative, and cosmetic benefits using a long-term solution. On average, a crown lasts for 5 to 15 years with the right aftercare. You can ensure you get the most from your investment by following a few tips after your crown placement.