Fracture Resistance and Stress Distribution Pattern of Different Posts-Core Systems in Immature Teeth: An In Vitro Study and 3D Finite Element Analysis

Table 1

Modulus of Elasticity and Poisson’s ratio of different materials.

	Young’s modulus (GPa)	Poison’s ratio
Enamel	84.1	0.33
Dentin	18.6	032
Periodontal ligament	6.89 × 10^−5	0.45
Cortical bone	13.7	0.30
Cancellous bone	1.37	0.30
Composite resin	11.3	0.30
Resin cement	9.5	0.30
MTA	11.7	0.31
Metal (Ni Cr)	200	0.33
Gutta percha	0.69	0.45