Between-treatment group comparisons for change from baseline values showed that the improvement in number of bleeding sites from baseline for the SnF2 group was 49 % greater versus that of the triclosan/copolymer group ( P < 0.001 ) , and the GBI and MGI improvements from baseline for the SnF2 group were 48 % and 37 % , greater , respectively , relative to the triclosan/copolymer group ( P < 0.001 ) .