Table 3. Comparison of the radiographic outer lesion depth at tooth restoration interface with different materials.

^a,b Same lower-case alphabets indicate a significant difference (one-way ANOVA and Tukey post hoc test p<0.05).

GIC - glass ionomer cement; NSF - nano-silver fluoride

Group	GIC	Composite	NSF + GIC	NSF + composite
n	10	10	10	10
Mean outer lesion depth	0.280 (0.08)	0.420 (0.19)ab	0.180 (0.10)a	0.200 (0.07)b