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Table 1 Demographics and clinical characteristics of sample

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 value
Mean SD Mean SD
Age 13.56 1.62 13.48 1.46 0.53
gender      
male 15   14   
female 15   16   0.34
Follow up period 7.24 1.32 7.68 1.6 0.46
Arch length Md 50.36 5.21 50.12 4.98 0.59
Arch length Max 59.32 4.68 59.12 4.96 0.35
Inter-canine width Md 27.36 1.40 28.12 1.34 0.36
Inter-canine width Max 34.23 1.68 34.26 1.59 0.33
Inter-molar width Md 36.26 2.13 36.59 2.36 0.48
Inter-molar width Max 42.32 2.36 41.89 2.29 0.67
II Md 11.26 4.56 11.89 5.36 0.24
II Max 10.38 3.89 9.87 4.12 0.18
PAR 28.48 10.23 27.68 10.98 0.34
  1. Max indicates maxillary; Md indicates mandibular; II indicates Irregularity Index; P > 0.05 indicates no statistically significant change.