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Table 2 Comparisons between the thickness changes (mm) of MAS, MM and FT

From: Thickness change of masseter muscles and the surrounding soft tissues in female patients during orthodontic treatment: a retrospective study

Measurements

Groups

p-value

Extraction

Nonextraction

Changes in MAS thickness (mm)

1.270 ± 0.780 (p < 0.001)

0.675 ± 0.822(p = 0.002)

0.021*

Changes in MM thickness (mm)

1.284 ± 0.586 (p < 0.001)

0.931 ± 0.658 (p < 0.001)

0.049*

Changes in FT thickness (mm)

0.006 ± 0.491 (p = 0.858)

− 0.302 ± 0.458 (p = 0.008)

0.096

  1. Abbreviations: MAS Masseter area of the face, MM Masseter muscle, FT Fat tissue
  2. *p < 0.05