Table 5.

Sensitivity and PPV by the neural network and the postgraduate students on different stages of proximal carious lesions

Lesions stage	Neural network		Students
	sensitivity	PPV	sensitivity	PPV
E1/E2	0.65	0.69	0.40	0.60
D1	0.69	0.71	0.32	0.65
D2/D3	0.85	0.92	0.66	0.91

PPV, positive predictive value; E1/E2, lesions limited in enamel; D1, lesions involving the outer third of dentin; D2/D3, lesions involving the middle and inner third of dentin.