Fig 3. Inverse relationship between the angular change and the pretreatment angle (α, δ₁ and δ₂).

α: n = 37, r = -0.26, P = 0.14 (A), δ₁: n = 37, r = -0.41, P ≤ .05 (B) and δ₂: n = 32, r = -0.47, P ≤ .01 (C), x axis, angle α, δ₁ or δ₂ before treatment, y axis, angular difference between pre- and posttreatment.