Enhancement of Tech-Sil25 Maxillofacial Silicone Mechanical Properties after Artificial Weathering through Addition of Nanoparticles

Table 2

The comparison of 1%, 2%, and 3% wt. nanoalumina (NA) addition on Tech-sil25 maxillofacial silicone mechanical properties.

	Weight percent (wt. %)	Values mean ± SD	F statistic^a (df)	value^a
Shore A hardness (mm)	Control	27.00 ± 1.00	30.15
	1% NA	27.33 ± 2.08	(3; 8)	0.000^b
	2% NA	30.67 ± 0.58
	3% NA	36.67 ± 1.53
Tensile (MPa)	Control	3.82 ± 0.59	13.46	0.002^c
	1% NA	4.79 ± 0.15	(3; 8)
	2% NA	5.56 ± 0.37
	3% NA	3.63 ± 0.45
Tear (kN/m)	Control	24.06 ± 0.09	97.77	0.000^b
	1% NA	24.57 ± 0.30	(3; 8)
	2% NA	25.65 ± 0.08
	3% NA	23.13 ± 0.17
Roughness (μm)	Control	0.21 ± 0.01	300.44	0.000^b
	1% NA	0.25 ± 0.01	(3; 8)
	2% NA	0.54 ± 0.04
	3% NA	0.76 ± 0.01

^aOne-way ANOVA test. ^b All 3 pairs of mean scores are significantly different by post hoc test (Scheffe procedure). ^c All 2 pairs of mean scores are significantly different by post hoc test (Scheffe procedure). ^∗indicates the highest mean value.