Table 4.

Mean ± SD ^a of baseline and follow-up log CFU/mL ^b of salivary microorganisms among the experimental groups

Bacteria	Groups	Baseline		Follow-up
		Mean ± SD	P valuec	Mean ± SD	P valuec
Streptococcus mutans	Crest® (control) (N = 30)	7.63 ± 0.57	0.811	7.08 ± 0.57	0.530
Streptococcus mutans	Tiger Herb® (test) (N = 30)	7.59 ± 0.48		6.98 ± 0.52
Lactobacillus	Crest® (control) (N = 30)	7.67 ± 0.62	0.829	7.19 ± 0.52	0.137
Lactobacillus	Tiger Herb® (test) (N = 30)	7.71 ± 0.62		6.97 ± 0.60

^aSD = Standard deviation

^bLog CFU/mL = logarithm of colony forming units per milliliter

^cSignificance level = 0.05, according to independent samples t-test. (Confidence interval = 95%)