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Maxillofacial Surgery

Orthognathic surgery

ADULT DOSE/ROUTE/DURATION	PAEDIATRIC DOSE/ROUTE/DURATION
Mandibular penicillin G 2MU IV ≤ 30 min pre-op	Mandibular penicillin G 50,000U/kg IV ≤ 30 min pre-op
Maxillary ampicillin 2g IV ≤ 30 min pre op	Maxillary ampicillin 50mg/kg IV ≤ 30 min pre-op
Penicillin/amoxicillin allergy cefuroxime 750mg IV/IM ≤ 30 min pre op	Penicillin/amoxicillin allergy cefuroxime 50mg/kg IV/IM ≤ 30 min pre op
Cefuroxime allergy clindamycin 600mg IV ≤ 30 min pre-op	Cefuroxime allergy clindamycin 20mg/kg IV ≤ 30 min pre-op

Major bone grafting - intraoral

ADULT DOSE/ROUTE/DURATION

PAEDIATRIC DOSE/ROUTE/DURATION

penicillin G 2MU IV ≤ 30 min pre-op

penicillin G 50,000U/kg IV ≤ 30 min pre-op

Penicillin/amoxicillin allergy

cefuroxime 750mg IV/IM ≤ 30 min pre op

Penicillin/amoxicillin allergy

cefuroxime 50mg/kg IV/IM ≤ 30 min pre op

clindamycin 600mg ≤ 30 min IV pre-op

clindamycin 20mg/kg IV ≤ 30 min pre-op

Major bone grafting - extraoral

ADULT DOSE/ROUTE/DURATION	PAEDIATRIC DOSE/ROUTE/DURATION
cefazolin 2g IV ≤ 30 min pre-op	cefazolin 25mg/kg IV ≤ 30 min pre-op
Cefazolin allergy clindamycin 600mg IV ≤ 30 min pre-op	Cefazolin allergy clindamycin 20mg/kg IV ≤ 30 min pre-op

Temporomandibular joint surgery

ADULT DOSE/ROUTE/DURATION	PAEDIATRIC DOSE/ROUTE/DURATION
cefazolin 2g IV ≤ 30 min pre-op	cefazolin 25mg/kg IV ≤ 30 min pre-op
Cefazolin allergy clindamycin 600mg IV ≤ 30 min pre-op	Cefazolin allergy clindamycin 20mg/kg IV ≤ 30 min pre-op