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Table 3 Comparison between the results of the condylar movements analysis if the Class I and Class II Division 1 groups

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

Class I (n = 30)

Class II Division 1 (n = 31)

P

RCX (mm)

7.4(6.05–8.48)

7.77(6.03–8.5)

0.228

RCY (mm)

0.62(0.37–0.92)

0.73(0.5–1.07)

0.209

RCZ (mm)

5.6(4.59–7.02)

5.3(4.3–7.3)

0.863

RCS (mm)

9.57(8.5-10.71)

9.66(8.98–10.77)

0.313

RCSCI (°)

47.78(38.03–52.33)

48.4(38-50.97)

0.564

RCTCI (°)

4.62(2.13–7.73)

5.47(2.8–7.63)

0.681

LCX (mm)

7.57(6-8.64)

8.07(6.77–9.2)

0.004**

LCY (mm)

0.63(0.37–0.92)

0.73(0.53–1.03)

0.186

LCZ (mm)

5.92(4.48–7.14)

6.07(4.83–7.27)

0.449

LCS (mm)

9.61(8.29–10.85)

10.12(9.05–11.79)

0.009**

LCSCI (°)

48.32(39.2-53.57)

46.7(35.77–51.23)

0.270

LCTCI (°)

4.27(2.2–6.84)

4.57(2.67–6.27)

0.718

  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 < 0.01
  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