Periodontal-orthodontic interdisciplinary management of a “periodontally hopeless” maxillary central incisor with severe mobility: A case report and review of literature

Table 1 Pretreatment and posttreatment cephalometric analysis

Measurement	norm ± SD	Pretreatment	Posttreatment
Maxilla to cranial base
SNA (°)	82.8 ± 4.0	85.0	85.1
Mandible to cranial base
SNB (°)	80.1 ± 3.9	83.7	83.8
SN-MP (°)	32.5 ± 5.2	26.6	26.3
FMA (MP-FH) (°)	31.3 ± 5.0	23.1	22.2
Maxillomandibular
ANB (°)	2.7 ± 2.0	1.3	1.3
Maxillary dentition
U1-NA (mm)	5.1 ± 2.4	4.6	6.9
U1-SN (°)	101.3 ± 5.7	107.3	110.2
Mandibular dentition
L1-NB (mm)	6.7 ± 2.1	6.3	6.1
L1-MP (°)	93.0 ± 5.8	95.2	91.7
Soft tissue
Lower lip to E-plane (mm)	-1.0 ± 1.0	4.1	3.0
Upper lip to E-plane (mm)	1.0 ± 2.0	-0.1	-0.2

ANB: Point A-nasion-point B; EP: E plane; FMA: Frankfort to mandibular plane angle; FH: Frankfort horizontal plane; L1: Lower incisor; LL: Lower lips; MP: Mandibular plane; NA: Nasion to point A; NB: Nasion to point B; SN: Sella-nasion plane; SNB: Sella-nasion-B point; U1: Upper incisor; UL: Upper lips.