I had an old root canal from 4 years ago reworked about 5 months ago.  The infection was(reworked) found during an xray for standard dental check.  So I went and had it reworked even though I was in no pain at all.  Within the last 5 days I have developed a hard absess on the gums on the front side of that same reworked tooth. It does not hurt, its just there.  Red and a hard lump.  I have made another appointment with my dentist for tomorrow.  But I am eager to know what this absess is and what can/may be done.  Any advice would be appreciated.
Hello, Welcome Thanks for consulting Chat Doctor, I have gone through your query, as you have undergone root canal treatment, and now you have hard lumped don't worry it can be due to infection in gums is still there. If there is periapical infection then go for Reject, if it is due to periodontal problem then go for curettage Hope this will help you.  Wishing you good health.