Incisal Interference Correction after Severe Extrusive Luxation Trauma during Orthodontic Treatment

Table 1

Cephalometric measurements before and after treatment.

Measurements	Norm	Before treatment	After treatment
Skeletal
SNA (°)		76.0	76.9
SNB (°)		72.5	73.6
ANB (°)		3.4	3.3
Wits (mm)	—	2.3	−2.6
NSL/ML (°)		41.1	41.7
NL/ML (°)		29.8	32.1
NSL/NL (°)		11.3	9.6
Dental
ILs/NL (°)		114.2	106.8
Is/APog (mm)		8.5	5.6
Interincisal angle (°)		126.4	131.4
ILi/ML (°)		89.6	89.8
Ii/Apog (mm)		3.1	2.8
Soft tissue
Nasolabial angle (°)		112.1	119.1
Ls to Sn–Pog’ (mm)		4.0	2.8
Li to Sn–Pog’ (mm)		4.9	3.2
Li to E-line (mm)		2.0	−0.6

Acronyms/full names: SNA = anteroposterior position maxilla; SNB = anteroposterior position mandible; ANB = sagittal jaw relationship; NSL/ML = (nasion–sella line/mandibular line) vertical skeletal pattern; NL/ML = (nasal line/mandibular line) vertical dentoalveolar complex; NSL/NL = (nasion–sella line/nasal line) inclination of the palatal plane; ILs/NL = (maxillary incisor inclination angle to nasal line) inclination of the maxillary incisors; Is/APog (maxillary incisor to A-pogonion line) anteroposterior position maxillary incisors; ILi/ML = (mandibular incisor inclination angle to mandibular line) inclination of the mandibular incisors; (Ii/Apog) = (mandibular incisor to A-pogonion line) anteroposterior position mandibular incisors; Ls to Sn-Pog’ = (midpoint of the vermilion border of the upper lip to the subnasale-pogonion’ line) anteroposterior position of the upper lip; Li to Sn-Pog’ = (midpoint of the vermilion border of the lower lip to the subnasale–pogonion’ line) anteroposterior position of the lower lip; Li to E-line = (midpoint of the vermilion border of the lower lip to the esthetic line) anteroposterior position of the lower lip. The cephalometric values ​​beyond one standard deviation (SD) are shown in bold.