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. 2022 May 9;52(3):210–219. doi: 10.4041/kjod21.180

Table 6.

Comparison of programmed vertical tooth movements in ClinCheck® among Angle’s Class I, II, and III groups of adult patients with anterior open bite treated by clear aligners without extraction

Vertical movements Planned movement Actual movement
Class I (n = 44) Class II (n = 16) Class III (n = 9) p-value Dental open bite group (n = 19) Skeletal open bite group (n = 50) p-value
U6 (mm) −0.71 ± 0.52a −1.45 ± 0.78bc −0.79 ± 0.66ac < 0.001 −0.77 ± 0.53 −0.93 ± 0.72 0.34
L6 (mm) −0.63 ± 0.56 −0.48 ± 0.63 −0.60 ± 0.54 0.54 −0.42 ± 0.45 −0.66 ± 0.60 0.13
U1 (mm)* 0.69 ± 1.00 0.49 ± 1.05 0.31 ± 0.37 0.48 0.80 ± 1.16 0.52 ± 0.86 0.29
L1 (mm)* 0.11 ± 0.86 0.13 ± 0.58 −0.42 ± 0.99 0.19 0.08 ± 1.15 0.02 ± 0.69 0.79

Values are presented as mean ± standard deviation.

The minus sign indicates intrusion while the plus sign indicates extrusion.

U6, maxillary 1st molar; L6, mandibular 1st molar; U1, maxillary central incisor; L1, mandibular central incisor.

*Vertical movements of the incisors included only absolute extrusion/intrusion movements.

Data collected from the first ClinCheck® (Align Technology Inc., San Jose, CA, USA).

Two-way ANOVA and Tukey post hoc test. Values with different superscript letters are significantly different (p < 0.05).