Dental crowns have an average lifespan of between five and 15 years, but some have lasted as long as 30 years with excellent at-home and professional care. If your crown is coming up on the end of its life and you think you need a new one, there are a few signs that you can look out for to tell when it’s time to schedule a visit to your dentist in Dallas. Read on to learn how you can extend the lifespan of your crown and how to tell that it needs to be replaced.