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Table 5 Stresses on PDL in Mega Pascal in group I and group II in consolidation models

From: Evaluating the effects of consolidation on intrusion and retraction using temporary anchorage devices—a FEM study

   Von Mises stresses Principle tensile stresses Principle compressive stresses
Implant height (mm) C.I L.I C PM M C.I L.I C PM M C.I L.I C PM M
Group I 7 0.004 0.016 0.011 0.004 0.004 0.003 0.003 0.013 0.005 0.003 0 0 0 0 0
10 0.002 0.017 0.013 0.004 0.004 0.004 0.003 0.013 0.003 0.003 0 0 0 0 0
13 0.002 0.017 0.011 0.002 0.002 0.004 0.003 0.013 0.003 0.003 0 0 0 0 0
Group II 7 0.002 0.003 0.002 0.002 0.009 0.003 0 0 0.011 0.001 0 0 0 0 0
10 0.004 0.017 0.013 0.004 0.002 0.004 0.003 0.014 0.003 0.002 0 0 0 0 0
13 0.004 0.017 0.013 0.003 0.002 0.004 0.003 0.013 0.003 0 0 0 0 0 0
  1. Inference: C.I central incisor, L.I lateral incisor, C canine, PM premolar, M molar
  2. Group I: Highest von Mises stress are observed in laterals (0.017) at 10- and 13-mm implant height followed by canines at 10-mm implant height (0.013) and centrals at 7-mm implant height (0.004). Principle tensile stresses are more in canines in all models (0.013) and no compressive stresses registered
  3. Group II: Principle tensile stresses are high in premolars in 7-mm implant height model (0.011) and von Mises stresses are more in 10- and 13-mm implant height models in laterals (0.017) and canines (0.013). Principle tensile stresses are more in canines in 10- and 13-mm implant height models (0.014 and 0.013, respectively), and no compressive stresses are observed