I had the tooth crowned about 6 months after the root canal, and in the process developed an infection that sits on
my upper gum
. My dentist put me through three rounds of antibiotics, popped the abcess three times now (after removing the crown, opening the nerve canal, popping it and injecting antibiotics into the area). This time, I'm on 250 mg x 2 of ciprofloxacin for 5 days (I was on clindamycin 150 mg x 3 previously all three times for 10 days with only mild results).