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Progress in Orthodontics

Table 4 Descriptive statistic of COS modification among the groups

From: Curve of Spee modification in different vertical skeletal patterns after clear aligner therapy: a 3D set-up retrospective study

Cohort

Mean dept T0 (mm)

Mean dept T1 (mm)

Mean dept ΔT1 − T0 (mm)

Normodivergents (n = 36)

1.64

2.09

0.45

Hyperdivergents (n = 34)

2.02

1.48

−0.54

Hypodivergents (n = 34)

2.11

2.13

0.02

Total sample (n = 106)

1.92

1.90

−0.01

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