Fig. 4From: Effects of subgingival air-polishing with trehalose powder on oral biofilm during periodontal maintenance therapy: a randomized-controlled pilot studyOther subgroups of bacterial species. Values are given as means in Log CFU/mL at different time points (baseline, immediately after treatment, after 3 and after 6 months). Also, percentage shares of aerobes and anaerobes are shown. Standard deviations are given where applicable, *p < 0.05Back to article page