Fracture Strength and Stress Distribution in Premolars Restored with Cast Post-and-Cores or Glass-Fiber Posts Considering the Influence of Ferule

Table 1

Mechanical properties of materials simulated in the study.

Material	E (GPa)	Poisson ratio ()	Shear modulus (GPa)
Dentin [17]	18	0.31
Polyether [18]	5 × 10^−2	0.45
Polystyrene resin [18]	13.5	0.31
Composite resin [18]	15.8	0.24
Stainless steel [19]	19.3	0.3
Cu-Al alloy [12]	109	0.33
Nickel-chromium alloy [20]	205	0.33
Resin cement [21]	18.6	0.28
Gutta percha [22]	1.4 × 10^−1	0.45
Glass Fiber post [23]	X=37	Xy=0.27	Gxy=3.1
	Y=9.5	Xz=0.34	Gxz=3.5
	Z=9.5	Yz=0.27	Gyz=3.1