Table 1.

Modulus of elasticity and Poisson’s ratio for each component of the tooth

Material	Youngs modulus (Gpa)	Poisson’s ratio
PEEK	5.1	0.4
Cr-Co	210	0.33
Gingiva	0.003	0.45
Alveolar bone	1.37	0.3
Cortical bone	1.37	0.3
Tooth (dentine)	18.6	0.31
PDL	0.069	0.45
Spongy bone	1.37	0.3
Gutta-percha	0.69	0.45

PEEK: Polyether ether ketone, PDL: Periodontal ligament