From: Reduction of extrinsic tooth stain by a toothpaste containing 10% high cleaning silica, 0.5% sodium phytate and 0.5% sodium pyrophosphate: an 8-week randomised clinical trial
Variables
Test toothpaste
Control toothpaste
P*
Lobene stain area score
1.63 (0.08)
1.59 (0.07)
0.75
Lobene stain intensity score
1.69 (0.10)
1.72 (0.09)
0.81
Lobene stain composite score
3.70 (0.26)
3.72 (0.24)
0.96