Aim: To retrospectively compare two approaches for the adjunctive use of systemic antibiotics in non-surgical periodontal therapy: one based on the detection of Aggregatibacter actinomycetemcomitans (Aa) and the other on age and severity of periodontitis (Age & PPD). We also assessed the additional benefit of antibiotics in reducing the need for further surgical therapy in each group.
Materials And Methods: Patients of the Department of Periodontology, Goethe University Frankfurt, Germany, were screened for microbiological testing between 2008 and 2018.