From: Predictability of crowding resolution in clear aligner treatment
Δ Irregularity index
Δ 3-3
Δ 4-4
Δ 5-5
Δ 6-6
Δ Arch length
Δ IPR
Pearson's r
− 0.41
− 0.35
− 0.21
− 0.27
0.09
0.31
p value
0.01
0.03
0.19
0.12
0.58
0.06