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Table 8 Prediction of changes in alar width

From: Influence of maxillary advancement surgery on skeletal and soft-tissue changes in the nose — a retrospective cone-beam computed tomography study

Maxillary advancement

Percentiles for increase in Al (mm)

5.0 %

10.0 %

50.0 %

90.0 %

95.0 %

2 mm

0.77994

0.87191

1.32704

2.01974

2.25791

3 mm

0.95805

1.07102

1.63009

2.48098

2.77353

4 mm

1.13726

1.27136

1.93499

2.94504

3.29231

5 mm

1.32078

1.47652

2.24725

3.42030

3.82361

6 mm

1.51028

1.68837

2.56968

3.91103

4.37221

7 mm

1.70677

1.90802

2.90400

4.41985

4.94103

8 mm

1.91093

2.13626

3.25137

4.94855

5.53207

9 mm

2.12328

2.37365

3.61268

5.49846

6.14682

10 mm

2.34424

2.62067

3.98863

6.07066

6.78649

  1. Approximate percentiles for Al relative to maxillary advancement. A advancement of 5mm would lead to a mean widening of the alar width of 2.2 mm
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Head & Face Medicine

ISSN: 1746-160X

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