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Dental antibiotic prophylaxis is the administration of antibiotics to a dental patient for prevention of harmful consequences of bacteremia, that may be caused by invasion of the oral flora into an injured gingival or peri-apical vessel during dental treatment.
There are many circumstances during dental treatment where antibiotics are prescribed by dentists to prevent further infection (e.g. post-operative infection). The most common antibiotic prescribed by dental practitioners is penicillin in the form of amoxicillin, however many patients are hypersensitive to this particular antibiotic.
Antibiotic prophylaxis refers to, for humans, the prevention of infection complications using antimicrobial therapy (most commonly antibiotics). Antibiotic prophylaxis in domestic animal feed mixes has been employed in America since at least 1970.
Since most mouth infections are polymicrobial, penicillin is an appropriate initial choice of antibiotic because of its activity against Streptococcus and gram negative anaerobes. If the patient has a penicillin allergy, then clindamycin with or without metronidazole are also effective empiric antibiotic regimens.
If this does not work, incision and drainage is required, as described in Dental abscess#Treatment. Antibiotics are of secondary importance to drainage, which if satisfactory renders antibiotics unnecessary. Antibiotics are generally reserved for severe infections, in which there is facial swelling, systemic upset and elevated temperature. [20]
Tetracyclines are generally used in the treatment of infections of the urinary tract, respiratory tract, and the intestines and are also used in the treatment of chlamydia, especially in patients allergic to β-lactams and macrolides; however, their use for these indications is less popular than it once was due to widespread development of resistance in the causative organisms.
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There have been many antibiotic regimes proposed for the treatment of AgP. However, the combination of choice according to current research is a combination of amoxicillin (500 mg, thrice/day) and metronidazole (200 mg, thrice/day), for 7 days, starting on the day of the final debridement.