Table 1. Summary of cephalometric findings.

Variable	Japanese norms for women	SD	pretreatment	post-treatment	2 years post-retention	4.5 years post-retention
Angular (degrees)
ANB	2.8	2.44	4.0	5.0	5.0	5.0
SNA	80.8	3.61	82.0	82.0	82.0	82.0
SNB	77.9	4.54	78.0	77.0	77.0	77.0
FMA	30.5	3.6	24.0	24.0	24.0	24.0
Go.A	122.1	5.29	111.0	111.0	111.0	111.0
U1-FH	112.3	8.26	117.0	104.5	104.5	104.5
L1-Mp	93.4	6.77	110.0	100.0	102.0	102.0
interincisal angle	123.6	10.64	109.0	131.5	129.5	129.5
Linear (mm)
S-N	67.9	3.65	64.5	64.5	64.5	64.5
N-Me	125.8	5.04	126.0	126.0	126.0	126.0
Me/PP	68.6	3.71	70.0	70.0	70.0	70.0
Ar-Go	47.3	3.33	55.0	55.0	55.0	55.0
Go-Me	71.4	4.14	72.0	72.0	72.0	72.0
Ar-Me	106.6	5.74	109.0	109.0	109.0	109.0
Overjet	3.1	1.07	4.0	2.5	2.5	2.5
Overbite	3.3	1.89	-2.0	2.5	2.5	2.5
U1/PP	31	2.34	30.0	30.5	30.5	30.5
U6/PP	24.6	2	27.0	25.5	25.5	25.5
L1/Mp	44.2	2.68	43.0	43.5	43.5	43.5
L6/Mp	32.9	2.5	35.0	36.5	36.5	36.5