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 4

Multiple comparisons of composite resin materials.

Multiple Comparisons
Dependent Variable:    Bottom/top ratio
Tukey HSD
(I) Composite	(J) Composite	Mean Difference (I-J)	Std. Error	Sig.	95% Confidence Interval
					Lower Bound	Upper Bound
Clearfil	Tetric N Ceram	-8,3398	2,42456	,002	-14,0988	-2,5809
	Tetric Evo Ceram	-20,7431	2,42456	,000	-26,5021	-14,9841
Tetric N Ceram	Clearfil	8,3398	2,42456	,002	2,5809	14,0988
	Tetric Evo Ceram	-12,4033	2,65597	,000	-18,7119	-6,0946
Tetric Evo Ceram	Clearfil	20,7431	2,42456	,000	14,9841	26,5021
	Tetric N Ceram	12,4033	2,65597	,000	6,0946	18,7119

: the mean difference is significant at the 0,05 level.