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Table 3 Occlusal features: Descriptive analysis of space magnitude and sagittal inter-canine relationships for the aplasia side, overjet and overbite at the selected assessment time points

From: Quality of occlusal outcome following space closure in cases of lower second premolar aplasia using lingual orthodontic molar mesialization without maxillary counterbalancing extraction

  T0 T1 T2 T3
Space magnitude [mm]: Mean 7.5 6.5 0.0 0.0
(SD; min.; max.) (2.6; 2.5; 11.0) (2.3; 1.5; 11.5) (0.0; 0.0; 0.0) (0.0; 0.0; 0.0)
Canine relationship [mm]: Mean 3.5 4.3 0.2 0.1
(SD; min.; max.) (2.2; 0.0; 7.0) (2.2; 0.5; 7.7) (1.0; −1.2; 3.3) (0.3; 0.0; 1.0)
Overjet [mm]: Mean 4.0 5.1 0.9 1.9
(SD; min.; max.) (1.6; 2.0; 8.0) (2.3; 1.1; 10.2) (0,5; 0.0; 1.8) (0.4; 1.0; 3.0)
Overbite [mm]: Mean 4.4 3.0 1.0 2.2
(SD; min.; max.) (1.4; 2.0; 6.5) (1.2; 0.9; 6.0) (0.9; −1.1; 3.1) (0.6; 1.5; 4.0)
  1. Deviations from neutral sagittal canine relationship towards an Angle-Class II were defined as positive distances (+ mm); conversely, deviations in the anterior direction towards an Angle-Class III were defined by negative values (− mm). All values are given in mm