Table 1.

Definitions of alveolar measurements used

Measurement variables	Definition
UICE to LAC	Vertical distance difference from UICE to LAC (T1-T2) measured parallel to long axis
UICE to PAC	Vertical distance difference from UICE to PAC (T1-T2) measured parallel to long axis
Bending angle of labial cortex (BAL)	Angle formed with the points LAC (T1)-LBP-LAC (T2)
Bending angle of palatal cortex (BAP)	Angle formed with the points PAC (T1)-PBP-PAC (T2)
Bone height loss percentage at LAC	UICE to LAC (T1-T2)/distance measured perpendicular to long axis from LAC to UIRA (T1)×100%
Bone height loss percentage at PAC	UICE to PAC (T1-T2)/distance measured perpendicular to long axis from PAC to UIRA (T1)×100%