Three-dimensional spatial analysis of temporomandibular joint in adolescent Class II division 1 malocclusion patients: comparison of Twin-Block and clear functional aligner

Table 7 Comparison of the TMJ measurement values before and after treatment in the clear functional aligner group (x ± s, mm)

Variable	Before treatment	After treatment	P-value
AJS	2.75 ± 0.20	2.72 ± 0.19	0.200
SJS	2.93 ± 0.17	3.01 ± 0.22	0.024*
PJS	2.61 ± 0.24	2.67 ± 0.19	0.057
MJS	2.88 ± 0.19	2.89 ± 0.19	0.183
LJS	2.61 ± 0.24	2.64 ± 0.25	0.069
WGF	29.12 ± 1.30	29.45 ± 1.33	0.149
DGF	13.64 ± 0.78	15.37 ± 1.01	0.001*
HC	9.22 ± 0.56	11.60 ± 0.85	0.001*
SCA (°)	73.82 ± 2.45	73.13 ± 2.00	0.058
HCA (°)	72.68 ± 3.11	72.57 ± 3.32	0.814
IEDC	16.72 ± 1.97	17.62 ± 1.57	0.001*
APDC	8.51 ± 0.66	9.37 ± 0.77	0.001*
VC (mm³)	1190.86 ± 243.23	1251.41 ± 154.23	0.004*
SC (mm²)	1495.45 ± 197.66	1608.39 ± 160.54	0.001*
LMR	60.45 ± 4.84	63.40 ± 4.31	0.001*
LMB	79.23 ± 4.18	81.46 ± 4.05	0.001*
WMR	31.15 ± 2.20	31.69 ± 2.05	0.020*
ML	113.61 ± 4.83	117.68 ± 3.77	0.001*

TMJ temporomandibular joint, AJS anterior joint space, SJS superior joint space, PJS posterior joint space, MJS medial joint space, LJS lateral joint space, WGF width of the glenoid fossa, DGF depth of the glenoid fossa, HC height of the condyle, SCA sagittal condylar angle, HCA horizontal condylar angle, IEDC internal and external diameters of the condyle, APDC anterior and posterior diameters of the condyle, VC volume of the condyle, SC surface area of the condyle, LMR length of mandibular rami, LMB length of the mandibular body, WMR width of the mandibular rami, ML mandibular length
^*P < 0.05

ISSN: 1746-160X