Table 1 Weight ratio of the Strontium-containing fluorapatite (Sr-FAp) in each group (%).

From: Whitening efficacy and enamel properties of 30% hydrogen peroxide solution incorporated with strontium-containing Fluorapatite

Group

30% Hydrogen peroxide (HP) solution

Strontium-containing Fluorapatite (Sr-FAp)

pH

DW

-

-

6.7

HP

100.0

0.0

2.8

Sr-FAp 1%

99.0

1.0

3.5

Sr-FAp 5%

95.0

5.0

4.1

Sr-FAp 10%

90.0

10.0

4.5

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