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Table 1 Material property data representation

From: A comparison of three-dimensional stress distribution and displacement of naso-maxillary complex on application of forces using quad-helix and nickel titanium palatal expander 2 (NPE2): a FEM study

  Young’s modulus (Newton/mm2) Poisson’s ratio
Tooth [10] 2.07 × 104 0.30
Cortical bone [10] 1.37 × 104 0.30
Cancellous bone [10] 7.9 × 103 0.30
Suture [10] 7 0.40
Periodontal ligament [10] 50 0.49
Stainless steel [11] 2.1 × 105 0.3
Nickel titanium [12] 44 × 103 0.33