There are few dental procedures that strike fear in the hearts of patients like the root canal. The procedure, which clears out infected pulp inside of a tooth and replaces it with synthetic pulp, has earned a reputation of being long and painful. Worse yet, it doesn’t come with a guarantee. Because of the microscopic size of the root canals of the teeth, it can be tricky for dentists to find and clear out (and then refill) all the canals. This means even if the dentist is able to clean out all of the infected pulp, it could still come back. With risks like that, it's no wonder most people aren’t too keen on getting the procedure done in the first place.