Table 1.

Results of the QLF measurements in different groups: ΔF (fluorescence loss [%]) shows avarage fluorescence loss in a lesion and is related to the loss of mineral content and to lesion depth (SD: standard deviation).

Time	Group	Minimum	Maximum	Mean	SD	Group comparison
ΔF T-demin	I: SDF	− 21.3	− 8.1	− 16.65	4.13	p = 0.251
	II: Bifluorid 12	− 22.7	− 7.2	− 15.38	4.70
	III: Cervitec F	− 23.8	− 10.0	− 17.56	4.16
	Negative control	− 19.1	− 10.1	− 13.46	3.89
ΔF T07	I: SDF	− 21.8	− 8.4	− 14.16	3.94	p = 0.075
	II: Bifluorid 12	− 30.5	− 10.5	− 17.88	4.89
	III: Cervitec F	− 24.1	− 8.1	− 15.88	4.13
ΔF T14	I: SDF	− 23.1	− 8.6	− 15.53	4.42	p = 0.060
	II: Bifluorid 12	− 30.9	− 12.6	− 19.40	5.19
	III: Cervitec F	− 21.9	− 7.4	− 15.97	4.56
ΔF T21	I: SDF	− 31.3	− 8.6	− 16.17	6.81	p = 0.131
	II: Bifluorid 12	− 27.1	− 12.1	− 18.81	4.12
	III: Cervitec F	− 22.0	− 8.9	− 15.08	3.81
ΔF T28	I: SDF	− 33.0	− 9.9	− 16.47a	6.08	p = 0.034*
	II: Bifluorid 12	− 20.0	− 12.4	− 15.55a,b	2.15
	III: Cervitec F	− 22.9	− 6.3	− 11.71b	4.83
	Negative control	− 20.2	− 12.6	− 15.40a,b	3.20

*Different superscript letters indicate significant differences between the groups.