Table 1.

Cross-tables showing the relationship between the different methods and the gold standard.

	Gold standard (clinical lesion depth)
	0	1	2	3	4	Total
ICDAS-II scores
0 (sound)	13	0	0	0	0	13
1-2 (enamel lesion)	0	13	16	8	4	41
3–6 (dentine lesion)	0	0	2	9	19	30
Total	13	13	18	17	23	84
LF scores*
0–7 (sound)	12	9	10	2	1	34
8–24 (enamel lesion)	1	2	6	9	6	24
25–99 (dentine lesion)	0	2	2	6	16	26
Total	13	13	18	17	23	84
FC scores**
0–0.9 (sound)	1	0	0	0	0	1
>0.9–2 (enamel lesion)	12	13	18	16	13	72
>2 (dentine lesion)	0	0	0	1	6	7
Total	13	13	18	17	19	80
FC scores***
0–1.2 (sound)	13	8	4	0	0	25
1.3–1.4 (enamel lesion)	0	4	5	2	0	11
>1.4 (dentine lesion)	0	1	9	15	19	44
Total	13	13	18	17	19	80
Bitewing scores
0 (sound)	12	12	16	16	13	69
1-2 (enamel lesion)	0	0	0	0	0	0
3-4 (dentine lesion)	1	1	2	1	10	15
Total	13	13	18	17	23	84

*Cutoffs according to the literature [4].

**Cutoffs according to the manufacturer's recommendation.

***Cutoffs according to the literature [5].