It is estimated that your crowns will last somewhere in the region of 5-15 years.
Naturally, this will depend on a few different factors. You will need to take good care of them.
Studies have shown how much stress they are put under and how well they are cleaned influences how long a crown will last.
If these conditions are met, 97% of your crowns will be intact after ten years, with 85% making it to the 25-year mark.