In Vitro Bioactivity of Binary Nepheline-Fluorapatite Glass/Polymethyl-Methacrylate Composite

Table 4

The mean and standard deviation (SD) values of compressive strength (MPa) in each group.

Variables	20% glass	40% glass	value
	(mean ± SD)	(mean ± SD)
Control	97.30 ± 3.90^aA	97.30 ± 3.90^aA	1, ns
NeAp 75	87.14 ± 6.65^aA	70.83 ± 3.31^acA	0.309, ns
NeAp 80	91.13 ± 6.26^aB	76.34 ± 5.57^acA	0.038
NeAp 85	92.98 ± 5.93^aA	70.36 ± 6.47^bcB	0.011
NeAp 90	96.90 ± 2.94^aB	85.17 ± 6.82^aA	0.019
value	≤0.001	0.085, ns

Means with different lower case letters in the same column indicate statistically significant difference, while means with different upper case letters in the same row indicate statistically significant difference; significant (); ns: nonsignificant ().