Periodontal diagnosis in the context of the BSP implementation plan for the 2017 classification system of periodontal diseases and conditions: presentation of a patient with severe periodontitis following successful periodontal therapy and supportive periodontal treatment.

A case of a 59-year-old patient who attended with a history of periodontitis, who had been successfully treated and maintained for several years is described. Following a full periodontal assessment, the patient was diagnosed with “Generalised periodontitis; Stage IV; Grade C; currently stable”. The present case report exemplifies the use of the 2017 classification system in a successfully treated and well-maintained patient whose treatment need is supportive periodontal treatment. It recognises the fact that by staging and grading, the patient is a high-risk periodontitis patient due to historical disease experience, but also that following successful therapy and maintenance she is currently “stable” with no need for active periodontal therapy.