pISSN 2234-7518
eISSN 2005-372X

Statistical comparison of the maxillary anterior teeth in each group

CRA Kruskal–Wallis test Mann–Whitney U test
#11 vs. #12 #11 vs. #13 #12 vs. #13
MDCRA
Class I < 0.001*** 0.547 0.002** < 0.001***
Class II < 0.001*** 0.904 < 0.001*** < 0.001***
Class III < 0.001*** 0.738 < 0.001*** < 0.001***
LLCRA
Class I < 0.001*** 0.002** < 0.001*** < 0.001***
Class II < 0.001*** < 0.001*** < 0.001*** < 0.001***
Class III < 0.001*** 0.968 < 0.001*** < 0.001***

CRA, crown-root angulation; MDCRA, mesiodistal crown-root angulation; LLCRA, labiolingual crown-root angulation.

**p < 0.01; ***p < 0.001.
Korean J Orthod 2022;52:432~438 https://doi.org/10.4041/kjod22.126
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