Fig. 4From: The effectiveness of an actuator-driven pulsed water jet for the removal of artificial dental calculus: a preliminary studyComparison of the removal rates of artificial calculus among the different ADPJ settings. Difference by time *p < 0.05, **p < 0.01, ***p < 0.001 Difference by applied voltage #p < 0.05 ADPJ: actuator-driven pulsed water jetBack to article page