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Table 3 Post-treatment and Post-retention Occlusal Dimensions (mm, except for PAR) of SL and CL group

From: Stability of treatment with self-ligating brackets and conventional brackets in adolescents: a long-term follow-up retrospective study

Variable SL group Cl group P
Mean SD Mean SD
II Max      
T(0)-T(P) -9.56 4.68 -8.96 5.12 0.25
T(2)-T(0) 0.89 1.26 0.79 1.45 0.12
T(5)-T(2) 0.68 1.11 0.56 1.34 0.09
II Md      
T(0)-T(P) -10.68 5.23 -10.69 5.69 0.35
T(2)-T(0) 1.69 1.23 1.89 1.35 0.25
T(5)-T(2) 0.26 0.78 0.34 0.66 0.39
PAR      
T(0)-T(P) -26.68 10.26 -25.88 10.98 0.78
T(2)-T(0) 1.64 1.98 1.56 1.68 0.35
T(5)-T(2) 0.98 1.25 1.23 1.39 0.37
  1. Max indicates maxillary; Md indicates mandibular; II indicates Irregularity Index; T(P) = pretreatment; T(0) = post-treatment; T(2) = 2 years post-retention; T(5) = more than 5 years post-retention; P > 0.05 indicates no statistically significant change;* indicates statistically significant change.