Acute Necrotising Ulcerative Gingivitis and Pericoronitis (Antimicrobial)

Warning

Refer to dental services for local measures in the first instance.  See Drug Prescribing in Dentistry from SDCEP section on NUG and pericoronitis.

If the patient is immunocompromised, they should advise the dental helpline operator who in turn will prioritise their call directly to the Clinical Dental Manager.

Acute necrotising ulcerative gingivitis – refer to dentist for scaling and oral hygiene advice.

Pericoronitis – refer to dentist for irrigation and debridement.

Use in combination with antiseptic mouthwash if pain limits oral hygiene.

Drug details

First choice:
Metronidazole
400mg three times daily

Alternative:
Amoxicillin 500mg three times a day

3 days

Chlorhexidine 0·12-0·2% (do not use within 30 mins of toothpaste). Rinse mouth with 10ml diluted with 10ml water for 1 minute twice daily.

Always spit out after use.

Use until lesions resolve or less pain allows oral hygiene.

Hydrogen Peroxide 6%. Rinse mouth with 15ml diluted in ½ glass warm water for 2 mins three times daily

Always spit out after use.

Use until lesions resolve or less pain allows oral hygiene.

Editorial Information

Last reviewed: 22/08/2024

Next review date: 22/08/2027

Author(s): Antimicrobial Management Team.

Version: 1.1

Approved By: TAM subgroup of ADTC

Reviewer name(s): Alison Macdonald, Area Antimicrobial Pharmacist.

Document Id: AMT108