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Table 7 Comparison of condylar motion analysis between the Class I and MA treatment group at T1 and T2

From: Evaluation of mandibular motion in adolescents with skeletal class II division 1 malocclusion during mandibular advancement using clear functional aligners: a prospective study

Variables

T1 (n = 16)

P (T1VS Class I)

Class I (n = 30)

P (Class I VST3)

T3 (n = 16)

RCX (mm)

7.62(5.52–8.24)

0.686

7.4(6.05–8.48)

0.344

8.03(6.07–8.56)

RCY (mm)

0.78(0.54–1.18)

0.079

0.62(0.37–0.92)

0.103

0.75(0.47–1.21)

RCZ (mm)

5.05(4.11–6.25)

0.109

5.6(4.59–7.02)

0.818

5.82(4.43–6.74)

RCS (mm)

9.2(7.28–9.95)

0.747

9.57(8.5-10.71)

0.321

9.95(8.46–11.36)

RCSCI (°)

42.52(35.19–49.19)

0.062

47.78(38.03–52.33)

0.712

44.7(41.2-52.34)

RCTCI (°)

5.67(3.29–6.78)

0.636

4.62(2.13–7.73)

0.289

6.33(2.48–12.87)

LCX (mm)

7.95(6.22–8.79)

0.029*

7.57(6-8.64)

0.097

7.58(6.43–8.53)

LCY (mm)

0.78(0.58–1.13)

0.072

0.63(0.37–0.92)

0.221

0.73(0.51–0.95)

LCZ (mm)

5.25(3.79–6.55)

0.482

5.92(4.48–7.14)

0.800

5.88(4.55–6.63)

LCS (mm)

9.8(8.31–10.9)

0.174

9.61(8.29–10.85)

0.249

9.07(8.65–11.19)

LCSCI (°)

41.1(32.84–49.07)

0.117

48.32(39.2-53.57)

0.185

43.17(39.15–49.78)

LCTCI (°)

4.85(2.77–6.77)

0.564

4.27(2.2–6.84)

0.235

4.9(3.2–9.18)

  1. Note Values are presented as medians (upper and lower quartiles)
  2. *Statistically significant difference was evaluated by the Mann-Whitney U test, with a significance level of P < 0.05
  3. RCX/LCX: The right/left condyle maximum sagittal anteroposterior displacement on the X-axis. RCY/LCY: The right/left condyle maximum left-right displacement on the Y-axis. RCZ/LCZ: The right/left condyle maximum superoinferior displacement on the Z-axis. RCSCI: The right condylar inclination in the sagittal plane when the displacement is 5 mm. LCSCI: The left condylar inclination in the sagittal plane when the displacement is 5 mm. RCTCI: The right condylar inclination in the transverse plane when the displacement is 5 mm. LCTCI: The left condylar inclination in the transverse plane when the displacement is 5 mm