Table 2.

Plaque pH: AUC_5.7 and AUC_6.2 (mean ± SD) during the experimental period

AUC5.7
	Time	Polyol		Xylitol		p value one-way ANOVA
		Subjects (n)	Mean ± SD	Subjects (n)	Mean ± SD
	Baseline	90	11.7 ± 0.6	89	11.5 ± 0.5	0.87
Gum use	6 months	79	11.4 ± 0.5	77	11.3 ± 0.3	0.90
	12 months	72	9.9 ± 0.3	71	9.6 ± 0.4	0.78
No-gum use	24 months	64	11.4 ± 0.2	66	9.8 ± 0.3	0.04
	p value one-way ANOVA		0.08		0.02
AUC6.2
	Time	Polyol		Xylitol		p value one-way ANOVA
		Subjects (n)	Mean ± SD	Subjects (n)	Mean ± SD
	Baseline	90	21.6 ± 0.2	89	22.8 ± 0.6	0.11
Gum use	6 months	79	18.9 ± 0.8	77	20.1 ± 0.5	0.07
	12 months	72	19.0 ± 0.8	71	18.6 ± 0.7	0.26
No-gum use	24 months	64	19.5 ± 0.2	66	18.7 ± 0.6	0.15
	p value one-way ANOVA		0.12		<0.01