Nonextraction Management of Severely Malaligned and Constricted Upper Arch

Table 1

Pretreatment cephalometric analysis.

Variable	Pretreatment	Normal
SNA	77°
SNB	80°
ANB	-3°
SN to maxillary plane	8°
SN to mandibular plane	30°	32°
Wits appraisal	-5 mm	0 mm
Upper incisor to maxillary plane angle	110°
Lower incisor to maxillary plane angle	85°
U6–PTV	11.9 mm	—
L6–PTV	13.2 mm	—
Interincisal angle	142°
Maxillary-mandibular plane angle	22°
Upper anterior face height	51	—
Lower anterior face height	63	—
Face height ratio	55%	55%
Lower incisor to APo line	4 mm	0–2 mm
Lower lip to Ricketts plane	-6 mm	-2 mm
Upper lip to Ricketts line	-4 mm	-4 mm
Nasolabial angle	119°
Mand length (co-Pog)	113 mm	117 mm
Max length (co-A)	86 mm	92 mm
Max/mand differential	27 mm	27 mm