From: Effective contribution ratio of the molar during sequential distalization using clear aligners and micro-implant anchorage: a finite element study
Material
Young’s modulus (MPa)
Poisson’s ratio
Tooth [17, 20, 24, 25]
1.96 × 104
0.3
PDL[17, 20, 24, 25]
6.9 × 10–1
0.45
Cortical bone[17, 20, 24, 25]
1.37 × 104
0.26
Cancellous bone[17, 20, 24, 25]
1.37 × 103
Clear Aligner[17, 20, 24, 25]
5.28 × 102
0.36
Attachments[17, 20, 24, 25]
1.25 × 104
Buttons [25]
1.14 × 105
0.35
micro-implants[25]
