Nanotribological and Nanomechanical Properties Changes of Tooth After Bleaching and Remineralization in Wet Environment

Table 1 Bleaching products and the bleaching process in the research

Group	Products	Manufacturer	Active ingredients	Bleaching method	Application time per day
Control	AS	China	–	No bleaching	24 h in AS
12HP	Premium Dental Grade Teeth Whitening Gel	USA	12% HP	Apply bleaching products containing 12% HP on the samples under the lighting of a LED light	0.5 h bleaching and 23.5 h in AS
35CP	Opalescence PF	USA	35 % CP, 0.11 % (w/w) fluoride	Apply bleaching products containing 15% CP on the samples	6 h bleaching and 18 h in AS
15CP	Opalescence PF	USA	15 % CP, 0.11 % (w/w) fluoride	Apply bleaching products containing 35% CP on the samples	0.5 h bleaching and 23.5 h in AS