Table 2.

Material properties

Material	Young’s modulus, E (Mpa)	Poisson ratio, v
Alveolar bone	1.37*104	0.30
Teeth	1.96*104	0.30
Periodontal ligament	0.69	0.45
Clear aligners	528	0.36
Attachments	1.25*104	0.36
Miniscrew	1.03*105	0.33
Buccal button	2*105	0.30