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
− 0.45
− 0.27
0.04
− 0.04
0.08
0.03
p value
0.01
0.09
0.80
0.63
0.88