Measurement

Retainer

Mean

Std. deviation

Mean diff

Std. error mean difference

P value

Inter canine

Vacuum

31.4740

5.75803

0.046

0.11

0.677

3D

31.5200

5.80848

Inter premolar 4

Vacuum

38.3080

5.27847

0.181

0.14

0.245

3D

38.4890

5.27680

Inter premolar 5

Vacuum

43.7500

5.03196

0.096

0.22

0.666

3D

43.8460

5.39636

Inter molar

Vacuum

49.3060

4.61659

0.08

0.24

0.744

3D

49.3860

4.87203

Canine-midline left

Vacuum

16.7890

3.12837

0.06

0.07

0.432

3D

16.8530

3.25482

Canine-midline right

Vacuum

16.9470

3.62351

0.19

0.07

0.038*

3D

17.1360

3.67017

Canine-molar left

Vacuum

21.3270

1.30977

0.27

0.12

0.054

3D

21.6010

1.26958

Canine-molar right

Vacuum

21.4500

1.24846

0.18

0.11

0.151

3D

21.6290

1.06282