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

Table 8 Comparison of the changes in the TMJ measurement values after clear functional aligners and Twin-Block appliance treatments (x ± s, mm)

Variable	Clear functional aligners	Twin-Block appliance	T	P-value
AJS	-0.02 ± 0.24	-0.03 ± 0.16	0.341	0.734
SJS	-0.00 ± 0.20	0.08 ± 0.25	-1.829	0.071
PJS	0.06 ± 0.23	0.06 ± 0.22	0.033	0.974
MJS	0.01 ± 0.19	0.02 ± 0.09	-0.194	0.846
LJS	-0.01 ± 0.20	0.03 ± 0.12	-1.325	0.188
WGF	0.47 ± 1.78	0.33 ± 1.59	0.399	0.691
DGF	1.41 ± 1.39	1.73 ± 1.07	-1.282	0.203
HC	1.97 ± 0.92	2.38 ± 0.90	-2.226	0.028*
SCA (°)	-0.18 ± 2.66	-0.68 ± 2.49	0.966	0.337
HCA (°)	0.62 ± 2.32	-0.10 ± 3.07	1.319	0.190
IEDC	1.39 ± 1.03	0.90 ± 1.47	1.902	0.060
APDC	1.79 ± 1.00	0.86 ± 0.86	4.935	0.001*
VC (mm³)	83.98 ± 137.46	60.55 ± 139.78	0.836	0.405
SC (mm²)	118.23 ± 110.73	112.94 ± 124.34	0.222	0.825
LMR	4.74 ± 2.26	2.95 ± 2.37	3.829	0.001*
LMB	3.14 ± 1.57	2.24 ± 2.94	1.878	0.063
WMR	1.01 ± 1.32	0.53 ± 1.57	1.618	0.109
ML	5.20 ± 3.55	4.07 ± 3.62	1.548	0.125

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