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Table 1 Descriptive statistics in the extraction and nonextraction groups

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

Treatment duration (d)

903.545 ± 170.390

679.909 ± 265.823

0.003**

Pretreatment age (y)

24.591 ± 4.043

27.227 ± 6.339

0.404

Pretreatment FMA (°)

25.091 ± 5.246

24.000 ± 5.561

0.517

Posttreatment FMA (°)

25.409 ± 5.561

24.355 ± 5.634

0.579

Pretreatment ANB angle (°)

3.759 ± 2.426

4.265 ± 3.374

0.577

  1. Abbreviations: d Days, y Years
  2. **p < 0.01
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BMC Oral Health

ISSN: 1472-6831

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