Organisms involved are polymycrobial but often include Fusobacterium necrophorum, Treponema spp, Selenomonas, and Prevotella
Penicillin V 500 mg PO q6 hours AND Metronidazole 500mg PO q8 hours x 10 days OR
Clindamycin 600 mg PO q8 hours OR
Ampicillin/Sulbactam 3g IV q 6 hours daily
also nystatin oral rinses of 5ml q6 hrs daily for 14 days will help with concominent fungal infection
in addition to antibiotic regimen consider an oral anti-fungal or nystatin
Fluconazole 200mg PO daily for 14 days
ENT antibiotics
Neuro antibiotics
GU antibiotics
Eye antibiotics
Cardiovascular antibiotics
Pediatric antibiotics
Antibiotics 
Skin and soft tissue antibiotics