Adult

Mandibular Osteomyelitis, Acute

  • Surgical intervention often needed with sampling for cytology, histology, microscopy and culture
    • For suspected actinomycosis contact micro lab
  • Consult Micro/ID
  • Prolonged duration of treatment: up to 6 weeks. This can be extended if implant, prothesis or incomplete debridement e.g up to 6 months
  • Recommended antibiotic therapy listed below is empiric. Treatment should always be tailored to culture and sensitivity
    • If candida spp isolated from operative specimen discuss with Micro/ID

IV antibiotics are only indicated if patient is nil-by-mouth or not absorbing.

Preferred

amoxicillin 500mg po tds (iv if NBM) 

For severe cases: ADD metronidazole 400mg po tds (or 500mg iv tds if NBM) (metronidazole is for a maximum of 10 days)

Alternative

Mild/moderate disease AND penicillin allergy (non-severe or severe) or MRSA positive

doxycycline 100mg po bd 

Severe disease AND penicillin allergy (non-severe or severe) or MRSA positive:

co-trimoxazole 960mg bd po (or iv if NBM)

Additional Information

Editorial Information

Last reviewed: 01 May 2025