pISSN 2234-7518
eISSN 2005-372X

Angulation and inclination change before and after biocreative reverse curve system application

Variable T1 T2 Mean difference p-value* p-value
N Mean SD IQR N Mean SD IQR
Angulation (°) Total 272 82.12 5.17 7.29 272 86.25 8.84 9.33 < 0.0001 < 0.0001
L4 68 81.99 5.23 8.52 68 82.18 7.41 10.72 0.19 0.0490 0.0417
L5 68 82.00 5.26 5.94 68 83.83 8.45 7.35 1.83 0.0079 0.0328
L6 68 81.49 5.14 7.59 68 86.45 7.17 8.87 4.96 0.0604 0.0328
L7 68 83.00 5.15 8.29 68 92.54 8.85 8.75 9.54 0.0026 0.0370
Inclination (°) Total 272 82.64 4.95 6.92 272 85.27 6.10 7.08 0.0159 0.0617
L4 68 85.60 2.18 2.07 68 85.46 3.78 3.54 –0.15 0.0021 0.1344
L5 68 85.24 3.01 4.12 68 86.76 4.96 5.89 1.52 0.0052 0.0393
L6 68 81.31 3.98 6.01 68 83.20 5.18 6.20 1.89 0.1349 0.5234
L7 68 78.41 5.86 11.63 68 85.67 8.92 13.45 7.26 0.0183 0.2913

T1, pre-biocreative reverse curve (BRC); T2, post-BRC; SD, standard deviation; IQR, interquartile range; L4, the mandibular first premolar; L5, the mandibular second premolar; L6, the mandibular first molar; L7, the mandibular second molar.

*Levene’s test for equality of variances was performed.

Ansari–Bradley test was performed.

Korean J Orthod 2022;52:354~361 https://doi.org/10.4041/kjod22.140
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