You are here:

Oral Surgery/red mouth sore that won't heal


Red mouth sore
Red mouth sore  
I've had a mouth sore on the roof of my mouth for about 6 weeks now that has not healed at all. I've attached a photograph. I brought it up to my dentist, and after careful and thorough inspection he's not sure what it is. I was in a bike accident about 7 months ago in which 3 of my teeth were broken, and 2 had root canals. The sore is behind one of the teeth that had the root canal. The dentist could not find any evidence of an infected root canal, and x-rays were normal.

The sore is small, bright red, not painful, and bleeds profusely and very easily every couple of days. I have no pain around any of the teeth that were broken during my accident.

I'm going to my GP so I can maybe get a referral to a specialist that is covered by my insurance. What are some of the possible diagnoses? What questions should I ask the doctor? Should I seek a second opinion if the doctor recommends 'wait and see if it heals on its own'? How urgent should I be with seeking a diagnosis? Thank you!

Kate - I, of course, cannot fully determine what that lesion is.  It could be from your root canal treatment that might be failing (I am not saying it is but it is possible) from a tooth infection.  It could be chronic irritation lesion called a granuloma.  Now I am just throwing out that name and I could list a number of possible similar appearing lesions.  The recurrent episodes of bleeding every few days usually indicates an active infection.  For that reason I think one of the teeth that had root canal treatment could be the cause.

Do not wait; you need to have a board certified oral and maxillofacial surgeon examine you.  The doctor might biopsy it or an xray from a different perspective might disclose that a tooth might have a fracture or the tooth is infected.  So do not put off having yourself examined by an oral and maxillofacial surgeon.

So contact you insurance company and ask them for a surgeon to examine you.

Oral Surgery

All Answers

Answers by Expert:

Ask Experts


Joel S. Teig, DMD, Diplomate ABOMS, retired


I am a board certified oral and maxillofacial surgeon available to answer questions related to tooth extractions, implant insertion, facial recontruction, facial and oral tumor removal, TMJ dysfunction and various successful treatments, including surgery if all else fails, and occlusal discrepancy requiring orthognathic or jaw surgery.


Board Certified Oral and Maxillofacial Surgeon practicing for over 20 years. Assistant Clincal Professor at State University School of Dentistry.

American Dental Association, American Association of Oral and Maxillofacial Surgeons, American Board of Oral and Maxillofacial Surgeons

BA- University of Connecticut DMD-University of Pennsylvania School of Dental Medicine Oral and Maxillofacial Surgical Residency - Roosevelt Hospital, NYC

©2017 All rights reserved.

[an error occurred while processing this directive]