Table 3 Percentage of retention loss in (Newton) between the two studied groups at various times of measurement Primary retention vs one, two, and three years of use
From: Retention of bar clip attachment for mandibular implant overdenture
PEEK clip (M ± SD) (%) | Nylon clip (M ± SD) (%) | p value | |
|---|---|---|---|
Percentage change | |||
T1 versus T0 (%) | − 54.13 | − 1.80 | 0.000* |
T2 versus T0 (%) | − 52.63 | − 5.24 | 0.000* |
T2 versus T1 (%) | + 3.72 | − 3.28 | 0.018* |
T3 versus T0 (%) | − 58.66 | + 2.99 | 0.000* |
T3 versus T2 (%) | − 12.53 | + 8.76 | 0.000* |