Use of Artificial Neural Network in Determination of Shade, Light Curing Unit, and Composite Parameters’ Effect on Bottom/Top Vickers Hardness Ratio of Composites

Table 7

B/T VHN ratio for Clearfil Majesty Esthetic.

	Hilux	Bluephase 20i	Valo	Elipar S 10
B2	86.7 Aa	82.7 Aa	85.1 Aa	97.9 Aa
A2	68.6 Aa	76.3 ABa	88.7 Ba	92.5 Ba
HO	77.2 Aa	76.7 Aa	90.7 Aa	93.9 Aa

Capital letters show the significant differences between the light curing units; lower case shows the significant difference between the shades (p<0.05).