Table 1.

Sensitivity, specificity, and Az value for smooth surface caries.

Sensitivity
Caries level	Visual inspection		SS-OCT
	3 yrs	<9 yrs	3 yrs	<9 yrs
Enamel dem	0.98	0.96	0.98	0.97
Enamel caries	0.73	0.88	0.82	0.88
Dentin caries	0.58	0.49	0.64	0.96

Specificity
Caries level	Visual inspection		SS-OCT
	3 yrs	<9 yrs	3 yrs	<9 yrs
Enamel dem	0.67	0.78	0.89	0.98
Enamel caries	0.63	0.62	0.76	0.97
Dentin caries	0.84	0.97	0.90	0.95

Az value
Caries level	Visual inspection		SS-OCT
	3 yrs	<9 yrs	3 yrs	<9 yrs
Enamel dem	0.83	0.87	0.94	0.98
Enamel caries	0.68	0.75	0.79	0.92
Dentin caries	0.71	0.73	0.77	0.96

Enamel dem: enamel demineralization.

Enamel caries: enamel caries with cavitation.

SS-OCT: swept-source optical coherence tomography.

3 yrs: examiners with clinical experience for 3 years.

<9 yrs: examiners with clinical experience over 9 years.