Sr. no.		Tissue/restorative material		Young’s modulus of elasticity (GPa)		Poisson’s ratio
1.		Enamel		84.1		0.33
2.		Dentin		18.0		0.31
3.		Pulp		0.002		0.45
4.		PDL		0.00345		0.45
5.		Alveolar bone		13.8		0.30
6.		Dental amalgam (Dispersalloy,
		Johnson and Johnson, USA)		48.3		0.35
7.		Composite resin (Z 100, 3M
		Dental products,USA)		20.0		0.24