Ive had a fistula for several mos. in my mouth on top of  where a tooth was pulled 30 yrs. ago. Ive had a  partialfor 30 yrs. with no complaints. Fistula not bothering me. Must tooth next to it be pulled or can antibiotics be used first? Dental specialty.
Thanks for posting your query to Chat Doctor. After going through your history, you need radiographic and oral examination to trace the tooth with which fistula is associated. Then depending on the condition of the tooth, root canal treatment or extraction will be done. I would suggest you to visit an Endodontist for proper examination.Meanwhile, you can start the antibiotic course with amoxicillin 500 mg 2 times a day for 3 days. Hope my answer will help you.