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Table 2 Between-group comparisons in the mean differences between programmed and implemented IPR

From: Evaluation of interproximal reduction in individual teeth, and full arch assessment in clear aligner therapy: digital planning versus 3D model analysis after reduction

Group Region n patients n teeth Programmed IPR (P-IPR) Implemented IPR (I-IPR) (P-IPR) − (I-IPR) 95% CI for mean IPR difference p. Value for difference between P-IPR and I-IPR p Value for between group comparison of difference between P-IPR and I-IPR
All (anterior and posterior) Lower arch 53 362 0.31 ± 0.17 0.17 ± 0.16 0.14 ± 0.19 [0.12; 0.16]  < .0001**** 0.4783
Upper arch 43 204 0.28 ± 0.16 0.15 ± 0.15 0.13 ± 0.17 [0.105; 0.153]  < .0001****
All (anterior and posterior) Left side 74 286 0.29 ± 0.16 0.15 ± 0.15 0.13 ± 0.18 [0.112; 0.154]  < .0001**** 0.6789
Right side 71 280 0.30 ± 0.17 0.17 ± 0.16 0.14 ± 0.19 [0.117; 0.161]  < .0001****
Anterior teeth (1,2,3) Lower 53 274 0.33 ± 0.16 0.17 ± 0.16 0.16 ± 0.20 [0.133; 0.18]  < .0001**** 0.0302*
Upper 42 149 0.26 ± 0.15 0.14 ± 0.15 0.12 ± 0.17 [0.087; 0.144]  < .0001****
Anterior teeth (1,2,3) Left 73 213 0.30 ± 0.16 0.16 ± 0.16 0.14 ± 0.19 [0.114; 0.165]  < .0001**** 0.7708
Right 70 210 0.30 ± 0.16 0.16 ± 0.16 0.14 ± 0.19 [0.119; 0.171]  < .0001****
Posterior teeth (4,5) Lower 38 88 0.24 ± 0.15 0.15 ± 0.15 0.09 ± 0.15 [0.058; 0.122]  < .0001**** 0.0059**
Upper 22 55 0.32 ± 0.18 0.16 ± 0.14 0.17 ± 0.16 [0.122; 0.208]  < .0001****
Posterior teeth (4,5) Left 48 73 0.25 ± 0.15 0.13 ± 0.14 0.11 ± 0.15 [0.08; 0.15]  < .0001**** 0.7413
Right 44 70 0.29 ± 0.17 0.17 ± 0.15 0.12 ± 0.17 [0.084; 0.163]  < .0001****
  1. *P < .05; **P < .01; ***P < .001, ****P< .0001