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Table. 4.

Comparison of miniplate measurements according to root proximity

Variable Root proximity p-value
No contact (n = 11) Contact (n = 19) Interdental space (n = 18) No-root area (n = 49)
PH (mm) 10.88 ± 1.98b 9.75 ± 1.69b 9.96 ± 1.66b 12.73 ± 1.36a < 0.0001
PD1 (mm) 1.81 ± 0.44 1.95 ± 0.42 2.01 ± 0.42 2.09 ± 0.43 0.0968
PD2 (mm) 2.29 ± 0.58 2.26 ± 0.47 2.25 ± 0.40 2.20 ± 0.28 0.8296
PA (mm) 51.59 ± 11.40 49.39 ± 9.54 52.56 ± 10.01 57.18 ± 12.22 0.0823
MA (mm) 138.35 ± 6.47 142.19 ± 7.81 139.99 ± 9.88 141.06 ± 8.54 0.4169

Values are presented as mean ± standard deviation.

Kruskal Wallis test with Bonferroni post-hoc analysis was performed.

PH, vertical distance from the cementoenamel junction to the center of the miniplate anchoring screw (MPAS) at position 1; PD, distance from the outer surface of the labial cortical bone to the tip of the MPASs at positions 1 (PD1) and 2 (PD2); PA, angle of the miniplate placed on the mandibular symphysis; MA, angle made by the two tangents, with one from the most prominent midpoint of the chin and the other from the prominent point on the buccal root surface.

a,bStatistically significant difference between root proximity in PH; p < 0.05.

Korean J Orthod 2021;51:231~240 https://doi.org/10.4041/kjod.2021.51.4.231
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