How long do porcelain crowns last?
The longevity of a crown depends on a number of factors. A crown should last at least 5 years. Insurances will generally pay to redo the same crown every 5-7 years, depending on the particular insurance company.
If a patient has meticulous oral hygiene through proper home care and regular semiannual dental visits, then a crown can last over 10 years.
Normal wear-and-tear is to be expected with any dental restorative materials, and crowns are no exception. Crown failure normally occurs as a result of decay around the margins of where the crown meets the natural tooth.
Patients who engage in mouth-related habits such as tooth grinding, clenching, or chewing on ice are at risk of actually fracturing the crown restoration.