Have a bump near root canal?

Ver common: There is sometimes a reaction at the tip of the root. See your Dentist to be sure ( Routine visit is OK NOT an emergency! Hope this helps Dr Z

ChronicTooth Abscess: There are a number of common causes for endodontic failure like root fractures, untreated canals, perforations, zips, and transportations, etc. The good news is with the latest advances in technology nonsurgical retreatment is very often possible and highly successful. Proper diagnosis is the key to successful treatment. See your dentist for exam and x-ray.

Parulis: How long ago was this root canal completed? Usually a bump on the gum (aka parulis) indicated an active infection (unless this tooth was recently treated and the bump was previously there). This is most likely caused by a root fracture in the tooth that causes infection or failure of the previous root canal (this happens, and sometimes with no explanation).

New? Pain?: How long after the root canal? New or old? Pain or not. It may represent a failed root canal and abscess. See dentist who did root canal for assessment.