Relative to the manual toothbrush group , after a single tooth brushing the Colgate ProClinical C200 toothbrush , with either the triple clean head or sensitive head , provided statistically significantly greater reductions in whole mouth plaque index scores ( 51.9 % and 59.3 % , respectively ) , in gingival margin plaque index scores ( 700 % and 650 % , respectively ) , and interproximal plaque index scores ( 64.2 % and 60.4 % , respectively ) .