Adult

Dental Infections

Includes;

  • Periapical abscess
  • Dental infection with fascial space infection

Antimicrobials are only recommended as an adjunct to definitive treatment where there is an elevated temperature, evidence of systemic spread and local lymph node involvement.

Treat for up to 5 days (usually 3 days).

Review antibiotics daily and discontinue once afebrile with resolution of swelling

Preferred

amoxicillin 500mg po tds (iv if NBM) 

For severe cases: ADD metronidazole 400mg po tds (or 500mg iv tds if NBM)

Alternative

For penicillin allergy (non-severe and severe) or if pre-treated with a penicillin

doxycycline 100mg po bd OR clarithromycin 500mg po bd (iv if NBM)

If pregnant: erythromycin 500mg po qds

For severe cases: ADD metronidazole 400mg po tds (or 500mg iv tds if NBM)

Additional Information

Editorial Information

Last reviewed: 03 Mar 2025