Table 4

Mean Log10 S. mutans/sobrinus and Lactobacillus spp. levels and standard deviation at baseline, six weeks and the differences between six weeks and baseline after excluding 42 children with non-measurable S. mutans/sobrinus levels at baseline for children exposed to xylitol (11.7 g/d or 15.6 g/d) or maltitol (44.7 g/day) gummy bear snack.

Group
N
Variable
Mean
Std Dev
Paired T-Test

M45 (maltitol 44.7 g/d)
40




     S. mutans/sobrinus

Baseline
2.77
1.44



Six weeks
1.56
1.62



Six weeks – baseline
-1.22
1.57
p < 0.0001






     Lactobacillus spp.

Baseline
2.09
1.86



Six weeks
1.83
2.03



Six weeks – baseline
-0.31
2.40
p = 0.42

X12 (xylitol 11.7 g/d)
37




     S. mutans/sobrinus

Baseline
3.12
1.39



Six weeks
1.87
1.66



Six weeks – baseline
-1.21
1.10
p < 0.0001






     Lactobacillus spp.

Baseline
1.96
1.86



Six weeks
1.97
1.90



Six weeks – baseline
0.01
2.39
p = 0.99

X16 (xylitol 15.6 g/d)
35




     S. mutans/sobrinus

Baseline
3.35
1.49



Six weeks
1.61
1.75



Six weeks – baseline
-1.74
1.67
p < 0.0001






     Lactobacillus spp.







Baseline
2.51
1.85



Six weeks
2.41
1.94



Six weeks – baseline
-0.14
2.25
p = 0.73

Ly et al. BMC Oral Health 2008 8:20   doi:10.1186/1472-6831-8-20