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Bulletin of the National Research Centre

Table 3 Maxillary first molar rotational change at 6 months of canine retraction using miniscrews for direct anchorage

From: Evaluation of maxillary first molar rotation during direct miniscrew-supported maxillary canine retraction: a before-and-after study

 

N

Mean

SD

SEM

Mean difference

SD

SED

t

df

P value

Pre-retraction

20

77.3910

6.7287

1.5046

1.8945

0.6

1.257

1.5067

19

0.1483

Post-retraction

20

79.2855

5.9197

1.3237

  1. N: Sample size, SD: standard deviation, SED: standard error of difference
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