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Table 4 Force (F), moments (M), and M/F ratio on 1 mm activation of T-loop and closed helical loop with compensatory curvature

From: Comparative assessment of the efficacy of closed helical loop and T-loop for space closure in lingual orthodontics—a finite element study

Loops Nodes F (g) Moment (g mm) M/F
T-loop Anterior 105.6 407.62 3.86:1
Posterior 72.29 96.87 1.34:1
Closed helical loop Anterior 143.2 461.11 3.22:1
Posterior 100.1 102.11 1.02:1