Percentage reduction among groups.

Table 2: Percentage reduction among groups.

% Reduction	Median (Minimum-Maximum/Range)	p
5.25% NaOCI	99.87 (99.50 - 99.95)
2% CHX	99.97 (99.55 - 99.99)^¥
Gaseous O₃ + O₃ water	95.00 (86.67 - 99.75)^‡¥	0.001*
Gaseous ozone	90 (70 - 98)^‡¥
Saline	0 (0 - 0)^†

Kruskal wallis test ^*p < 0.01, Mann whitney U test p < 0.05; ^†The group that showed less bacterial reduction percentage than the other tested groups (p < 0.05);

^‡The group that showed less bacterial reduction percentage than CHX group (p < 0.05); ^¥The group that showed less bacterial reduction percentage than NaOCl group (p < 0.05).