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Table 4 Mean values (standard deviation) of study cast measurements of four groups

From: Morphological characteristics influencing the orthodontic extraction strategies for Angle's class II division 1 malocclusions

Variables Group 1 (4/) Group 2 (4/1) Group 3 (4/4) Group 4 (4/5)
Spee's curve depth (mm) 3.21 (0.85) a 3.13 (0.65) a 3.32 (0.64) a 3.72 (0.81) a
Overbite (mm) 3.45 (0.48) a 4.01 (0.51) a 3.99 (1.20) a 3.88(0.65) a
Overjet (mm) 7.71 (1.10) a 6.43 (0.69) b, c, d 6.25 (1.75) c, d 6.84 (0.98) d
Molar relationship (mm) 3.59 (0.53) a 3.75 (0.42) a 0.64 (0.30) b 1.92 (1.10) c
Lower anterior crowding (mm) 1.33 (0.86) a 3.60 (0.87) b, d 5.90 (1.06) c 4.03 (0.81) d
Bolton index 3-3 (%) 79.19 (2.36) a 82.18 (2.28) b 79.14 (2.29) a 79.25 (2.30) a
Bolton index 6-6 (%) 91.91 (2.29) a 92.07 (2.19) a 91.90 (2.20) a 91.92 (2.16) a
  1. Mean values represented with different lowercase letters within a row are significantly different according to one way ANOVA (Pā€‰<ā€‰0.05).