Table 1.  Details about bleaching agents used: manufacturer, concentration, pH, number of applications and total tooth contact time.
Bleaching system   Activating light source   Bleaching material dispensing   H2O2 %   pH   Number of application x time/cycle   Total material contact time
BeyondBeyond Technology Corp.Santa Clara, California, USA  Beyond WhiteningAcceleratorHigh-Intensity LightWL: 480–520 nm  Gel supplied in syringe  35%  4.0–5.5  3 x 8 minutes/ cycle  24 minutes
LumaWhite PlusLumaLite, Inc., 2810 Via Orange Way, Spring Valley, CA, USA  LumaCool LED Light WL: 380–530 nm  Powder and Liquid Mixed and applied with brush  35%  5.6  3 x 8 minutes/ cycle  24 minutes
Opalescence Boost Ultradent Products, Inc., South Jordan, Utah, USA.  none  Gel supplied in 2 separate syringesMixed and applied with mixing tip  38%  7  3 x 15 minutes/ cycle  45 minutes