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Table 1 Gender and age distribution of the patients in the two groups

From: Root resorption after leveling with super-elastic and conventional steel arch wires: a prospective study

  Males Females All Mean age (years) Range (years) SD
SE group 22 19 41 13.3 11 to 16 1.5
SS group 18 23 41 13.7 11 to 22 2.4
All 40 42 82 13.5 11 to 22 2.0