Ciprofloxacin for tooth infection"Cipro" mainly covers a type of bacteria known as "aerobic gram negative" it does not cover anaerobic, gram positive, organisms . Instructions on taking an antibiotic for a tooth infection. Dental Abscess - will ciprofloxacin help with a tooth abcess? Trichomoniasis - Can ciprofloxacin be used instead of metronidazole? Gram Negative Infection - I had an . . . I am getting ready . I can't go to the hospital either and I don't want the infection to spread. Will c... more