### Human:\nhow long do dental crowns last?\n\n### Assistant: on average dental crowns last between 5 and 15 years. the life span of a crown depends on the amount of "wear and tear" the crown is exposed to how well you follow good oral hygiene practices and your personal mouth-related habits (you should avoid such habits as grinding or clenching your teeth chewing ice biting your fingernails and using your teeth to open packaging).