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 5

Multiple comparisons of shades.

Multiple Comparisons
Dependent Variable:    Bottom/top ratio
Tukey HSD
(I) Shade	(J) Shade	Mean Difference (I-J)	Std. Error	Sig.	95% Confidence Interval
					Lower Bound	Upper Bound
B2	HO	3,4773	3,75611	,886	-6,9373	13,8920
	A2	6,5826	3,75611	,407	-3,8321	16,9972
	M	-10,3360	3,25289	,016	-19,3553	-1,3166
	L	-12,0404	3,25289	,003	-21,0597	-3,0210
HO	B2	-3,4773	3,75611	,886	-13,8920	6,9373
	A2	3,1053	3,75611	,922	-7,3094	13,5199
	M	-13,8133	3,25289	,000	-22,8326	-4,7939
	L	-15,5177	3,25289	,000	-24,5370	-6,4983
A2	B2	-6,5826	3,75611	,407	-16,9972	3,8321
	HO	-3,1053	3,75611	,922	-13,5199	7,3094
	M	-16,9186	3,25289	,000	-25,9379	-7,8992
	L	-18,6230	3,25289	,000	-27,6423	-9,6036
M	B2	10,3360	3,25289	,016	1,3166	19,3553
	HO	13,8133	3,25289	,000	4,7939	22,8326
	A2	16,9186	3,25289	,000	7,8992	25,9379
	L	-1,7044	2,65597	,968	-9,0687	5,6599
L	B2	12,0404	3,25289	,003	3,0210	21,0597
	HO	15,5177	3,25289	,000	6,4983	24,5370
	A2	18,6230	3,25289	,000	9,6036	27,6423
	M	1,7044	2,65597	,968	-5,6599	9,0687

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