Table 1.

Error assessment results

Parameter	Valid (n)	Mean	Minimum	Maximum	Range	SD
WSL on the maxillary tooth
L	3	78.54	78.44	78.64	0.20	0.068
a	3	0.86	0.47	1.25	0.78	0.258
b	3	18.33	18.12	18.54	0.42	0.149
WSL on the mandibular tooth
L	3	74.45	74.37	74.53	0.16	0.048
a	3	0.92	0.52	1.32	0.80	0.293
b	3	16.69	16.48	16.90	0.42	0.131

WSL white spot lesions, L lightness, a red-green axis, b yellow-blue axis