Fig. 2

Boxplots of residual metabolic activity in % of baseline rfu-values of different experimental conditions with median (inner horizontal line), 1^st and 3^rd quartile (lower and upper box line) and 10^th and 90^th percentile (whiskers). WF = oral irrigator; WPa = sonic toothbrush, active; WPi = sonic toothbrush, inactive; CO = Control. Significant differences are illustrated above corresponding boxplots