TABLE 1C.

Information of the tested in-office bleaching products containing >6% HP according to the manufacturer regarding their HP concentration, pH value, and exposure time.

Product name	Abbreviation	Company	Percentage HP	pH	Exposure time
Philips ZOOM®! 25%	PZ 25HP	Philips, Amsterdam, Netherlands	25% activated by a blue LED light (Philips Zoom® WhiteSpeed)	7.0–9.0	Four times for 15 min
Opalescence® Boost 40%	OP 40HP	Ultradent Products, Inc., South Jordan, UT, United States	40%	6.0–8.5	Three times for 20 min
Philips Dash 30%	PD 30HP	Philips, Amsterdam, Netherlands	30%	4.8–5.2	45 min