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

Table 3

The comparison of 1%, 2%, and 3% wt. nanosilica (NS) 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	45.27
	1% NS	29.33 ± 1.15	(3; 8)	0.000^b
	2% NS	33.66 ± 1.52
	3% NS	38.66 ± 1.52
Tensile (MPa)	Control	3.82 ± 0.59	13.46
	1% NS	5.16 ± 0.34	(3; 8)	0.002^c
	2% NS	6.20 ± 0.31
	3% NS	4.24 ± 0.59
Tear (kN/m)	Control	24.06 ± 0.09	84.08
	1% NS	24.88 ± 0.05	(3; 8)	0.000^b
	2% NS	25.89 ± 0.07
	3% NS	22.60 ± 0.50
Roughness (μm)	Control	0.20 ± 0.01	27.61
	1% NS	0.14 ± 0.02	(3; 8)	0.000^b
	2% NS	0.40 ± 0.13
	3% NS	0.61 ± 0.02

^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.