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. 2020 Jul 29;7:434. doi: 10.3389/fvets.2020.00434

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Copyright © 2020 Kau, Failing and Staszyk.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Mean coefficient of variation (CV) and mean maximum angular difference (Diff_max) of repeated interincisal angulation measurements by measuring method and tooth position. Bar plots display mean + SD (error bars); α, alpha angle degrees. Cephalometric determination of the angle encompassed by the respective labial axis of the clinical crown (LACC) of opposing third incisor teeth exhibited a significantly lower CV (A) and Diff_max (B) compared to the reference method that uses reconstruction of the lingual and palatal border (LPB); *P = 0.017, **P = 0.030, Student's t-test for paired samples, n = 9 horses (missing LBP observation horse 1). Comparing tooth positions 01-03 for LACC reconstructions, there was no significant difference in the CV (A) and Diff_max (B): CV, P = 0.312, Diff_max, P = 0.860, one-way repeated measures ANOVA, n = 10 horses (LACC observation horse 1 included), sphericity assumed.