Mechanical Properties Comparing Composite Fiber Length to Amalgam

Table 1

Averages and -test ( value) comparisons between composites and amalgam.

Fiber length (mm)	Flexural strength (MPa)	Modulus (GPa)	Yield strength (MPa)	Resilience (kJ/m^2)	WOF (kJ/m^2)	(kJ/m^2)	(MPa⋅m^1/2)	Strain at peak load
0.0 (PFC)	117.6; (0.0012)	19.5; (0.00102)	95.4; (0.01337)	3.03; (0.01882)	4.48; (5.1 × 10^−5)	0.036; (0.16055)	1.71; (0.06584)	0.0079; (0.9740)
0.5	113.8; (0.1399)	23.0; (0.0008)	92.8; (0.0372)	2.35; (0.0400)	3.91; (0.0984)	0.075; (0.1794)	1.93; (0.07953)	0.0062; (0.9189)
1.0	173.6; (0.00318)	26.2; (0.001875)	126.1; (0.00018)	3.84; (0.00083)	8.7; (0.01879)	0.097; (0.0584)	2.77; (0.00797)	0.0084; (0.2993)
2.0	373.9; (5.2 × 10^−5)	34.0; (0.00116)	329.8; (0.00168)	19.7; (0.00287)	28.2; (0.00046)	1.882; (0.0338)	11.01; (0.00579)	0.0121; (0.1290)
3.0	374.9; (2.2 × 10^−8)	31.5; (0.01236)	343.5; (0.00014)	23.3; (0.00348)	30.1; (4.2 × 10^−5)	2.4; (0.00296)	12.01; (3.89 × 10^−5)	0.0131; (0.0677)
Amalgam	86.0	43.6	62.6	0.67	1.40	0.013	0.91	0.0078