Effectiveness of Visual-Tactile Examination and DIAGNOdent Pen in Detecting Early Enamel Caries and Its Remineralisation: An In Vitro Study

Table 2

Kappa statistics for different cut-off values of DDPen score.

DDPen criteria	Histological gold standard
	Sound	Demineralised enamel		Demineralised dentine	Kappa value
		Outer half	Inner half
[32]	0-13	14-20		>21	.725
[44]	0-14	15-21		>22	.627
[35]	0-15	16-25		>25	.437
[33]	0-4	5-10	11-18	>18	.457