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Table 1 Material properties

From: Effects of upper-molar distalization using clear aligners in combination with Class II elastics: a three-dimensional finite element analysis

Material

Young’s modulus (MPa)

Poisson’s ratio

Tooth [14, 16, 18]

1.96 × 104

0.3

PDL [14, 16, 18]

6.9 × 10− 1

0.45

Cortical bone [14, 16, 18]

1.37 × 104

0.26

Cancellous bone [14, 16, 18]

1.37 × 103

0.3

Clear Aligner [14, 18]

5.28 × 102

0.36

Attachments [14, 16, 18]

1.25 × 104

0.36

Button [17]

1.14 × 105

0.35

Condylar cartilage [15]

8 × 10− 1

0.3

Temporal cartilage [15]

1.5

0.3

Disc [15]

1.8 × 10− 1

0.4