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Table 6 Correlation coefficients of removal torque, age, and length and diameter of microimplants

From: Long-term evaluation of factors affecting removal torque of microimplants

  Age Length of microimplant Diameter of microimplant
Self-drilling (n = 463)
 Removal torque
(mean ± SD: 3.37 ± 2.00 N cm)
0.024 0.221** 0.007
Pre-drilling (n = 220)
 Removal torque
(mean ± SD: 4.81 ± 2.82 N cm)
0.004 0.012 0.230*
  1. *p < 0.01, **p < 0.001