Usually, a root canal dentist will not suggest the procedure unless there are no other options. You most likely need a root canal if you've already had the tooth filled and you have additional decay in the tooth. Also, extreme pain is a sign of the need for a root canal. Contact Family Dental Care, if you would like to have your teeth examined to see if you need a root canal service. Visit https://chicagofamilydentalcare.com/services/root-canal/ for more information!