Liu G, et al. - Experts probed the shift in the subgingival microbiota under scaling and root planing (SRP) in patients with generalized aggressive periodontitis (GAgP). Findings suggested that the diversity of the subgingival community was consistent under SRP, whereas genus-level biomarkers transformed from Porphyromonas, Treponema, and Fretibacterium to Actinomyces, Streptococcus, and Haemophilus. In the subgingival microbiota of patients with GAgP, periodontal pathogens were seen to be decreased wih scaling and root planing. Nonetheless, 6 weeks after SRP, the expansion of pathogen-related components and the contraction of non-pathogen-related components characterized the shift in the microbiota composition.