pISSN 2234-7518
eISSN 2005-372X

Table. 5.

Correlation coefficients between the removal torques and potential variables in both placement methods

Removal torque Age Placement torque Microimplant length Microimplant diameter Total in-bone stay period Unloading
in-bone stay period
(during retention)
r p-value r p-value r p-value r p-value r p-value r p-value
Post-use removal
No-drilling 0.043 0.480 0.225 0.000*** 0.145 0.021* 0.018 0.779 0.046 0.449 - -
Pre-drilling 0.070 0.420 0.073 0.405 0.052 0.554 0.164 0.060 −0.001 0.987 - -
Post-retention removal
No-drilling −0.048 0.594 0.046 0.610 0.119 0.192 0.022 0.810 0.145 0.105 0.203 0.022*
Pre-drilling −0.163 0.291 −0.142 0.358 0.076 0.630 0.376 0.013* −0.223 0.146 −0.247 0.106

r, correlation coefficient.

Pearson correlation analysis was performed. *p < 0.05; ***p < 0.001.

Korean J Orthod 2022;52:201~209 https://doi.org/10.4041/kjod21.217
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