highly significantP < 0.01
The mean scores of carious wall lesion extension (μm) after cavity preparation with diamond bur and restoration with GIC was 64.00 ± 20.35, while the mean carious lesion extension (μm) after cavity preparation with sintered bur and restoration with GIC was 24.73 ± 9.95, and this difference was found to be statistically highly significant ( P < 0.01) [ Table 1 ].