From: Predictors of long-term stability of maxillary dental arch dimensions in patients treated with a transpalatal arch followed by fixed appliances
Variables (all mm except U1/PP in degrees)
T
C
Intercuspid width
0.14
0.19
Interpremolar width
0.12
Intermolar width
0.17
0.15
Perimeter
0.18
0.08
Length
0.13
Crowding
0.16
0.03
U1/PP
0.04
0.06