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Table 1 Retention in (Newton) between the two studied groups at various measurement times

From: Retention of bar clip attachment for mandibular implant overdenture

  PEEK clip
(M ± SD)
Nylon clip
(M ± SD)
P value
T0 42.08 ± 1.52 16.08 ± 0.68 0.000*
T1 19.26 ± 1.15 15.78 ± 0.93 0.000*
T2 19.90 ± 0.73 15.22 ± 0.53 0.000*
T3 17.37 ± 1.07 16.56 ± 0.88 0.055 NS
  1. T0, at time of overdenture insertion; T1, after 1 year of use; T2, after 2 years of use; T3, after 3 years of use; NS, Statistically not significant (p ≥ 0.05)