Effect of Addition of Cetylpyridinium Chloride Cationic Surfactant on the Antimicrobial Activity of Chlorhexidine Endodontic Irrigant

Table 2

Multiple Wilcoxon sum rank test for multiple comparisons of CFU/mL mean ranks among S. aureus and C. albicans subgroups.

Microorganism	Groups		Z test	p-Value
S. aureus	CHX	CHX + CPC; MTAD	0.528	0.597
			2.406	0.016
	CHX + CPC	MTAD	1.878	0.060
C. albicans	CHX	CHX + CPC; MTAD	0.589	0.556
			2.944	0.019
	CHX + CPC	MTAD	2.355	0.003

Note: Bold values illustrate a significant difference between tested subgroups. CHX, chlorhexidine; CPC, cetylpyridinium chloride.