From: Effect of bioactive glass paste on efficacy and post-operative sensitivity associated with at-home bleaching using 20% carbamide peroxide: a randomized controlled clinical trial
Time
Group
Mean ΔE
SE
P
T1
BAG
5.72
0.54
0.530
PLA
6.22
0.56
T2
7.63
0.73
0.437
6.90
0.57
T3
8.00
0.69
0.095
9.60
0.63
T4
8.38
0.62
0.120
9.74
0.59
T5
8.10
0.74
0.169
9.45
T6
7.70
0.77
0.246
8.97
0.75