Necrotising Gingivitis

Local measures are to be used in the first instance, antibiotics should only be used if there is evidence of systemic involvement.

Local Measures

  • Scaling, irrigation and oral hygiene advice.
  • Recommend the use of 0.2% chlorhexidine mouthwash until acute symptoms are relieved.


  • As an adjunct to local measures metronidazole is the drug of choice where there is evidence of systemic involvement. A suitable alternative is amoxicillin.
  • If antibiotics deemed clinically indicated:

dental table nec gingivitis 160921

Patient Information

Visit HPSC Information Leaflets pages for the General Public, (MRSA, CRE, etc)

Safe Prescribing (visit the safe prescribing page)

Reviewed Sept 2021

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