Comparative evaluation and patient satisfaction with an electrical impedance-based device versus digital radiography in the estimation of remaining dentin thickness in carious posterior permanent teeth: (Diagnostic accuracy study)

Table 3 Inter, intragroup comparisons and agreement of remining dentine bridge thickness measurements

Time	Remaining dentine bridge	n (%)		Test statistic	p-value	Weighted kappa (95% CI)
Time	Remaining dentine bridge	*Radiography*	*Prepometer™*	Test statistic	p-value	Weighted kappa (95% CI)
*Before excavation*	*Shallow*	54 (77.14%)	16 (22.86%)	49.50	< 0.001*	0.018 (-0.059:0.095)
	*Moderate*	16 (22.86%)	26 (37.14%)
	*Deep*	0 (0.00%)	28 (40.00%)
	*Very deep*	0 (0.00%)	0 (0.00%)
*After excavation*	*Shallow*	31 (44.29%)	13 (18.57%)	22.50	< 0.001*	*0.200 (0.097:0.302)**
	*Moderate*	39 (55.71%)	27 (38.57%)
	*Deep*	0 (0.00%)	30 (42.86%)
	*Very deep*	0 (0.00%)	0 (0.00%)
*Test statisti*c		28.00	185.00
*p-value*		< 0.001*	0.461

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