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Table 2 Absolute changes in the various models according to the material of each component

From: Torque differences due to the material variation of the orthodontic appliance: a finite element study

Factor Group Absolute crown displacement (mm) Absolute apex displacement (mm) Equivalent elastic strain in PDL Von Mises stress in bracket (MPa)
Adhesive RMGI Ref (0.0102) Ref (0.0513) Ref (0.2405) Ref (397.1245)
  Composite resin +0.0000 +0.0001 −0.0010 +0.0555
Bracket Titanium Ref (0.0093) Ref (0.0501) Ref (0.2159) Ref (305.7099)
  Stainless steel +0.0010 +0.0014 +0.0068 +90.0031
  Ceramic +0.0018 +0.0021 +0.0655 +181.3240
Ligature Elastomeric Ref (0.0100) Ref (0.0511) Ref (0.2565) Ref (389.9210)
  Stainless steel +0.0003 +0.0004 −0.0331 +14.4625
Wire TMA Ref (0.0058) Ref (0.0361) Ref (0.1470) Ref (249.8552)
  Stainless steel +0.0087 +0.0304 +0.1859 +294.5942
  1. PDL periodontal ligament, TMA titanium molybdenum alloy, RMGI resin-modified glass ionomer cement, Ref reference category consisting of the average across models with this material