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Table 3 Comparison between groups A and B of detachment number in the lower arch

From: A 15-month evaluation of bond failures of orthodontic brackets bonded with direct versus indirect bonding technique: a clinical trial

  Lower
Total lower arch Lower anterior section Lower posterior section
Group    
 A 396-17 198-6 198-11
4.29% 3.03% 5.56%
 B 228-22 114-2 114-20
9.64% 1.75% 17.54%
Total 624-39 312-8 312-31
6.25% 2.56% 9.94%
Chi-squared test P < 0.05 ns P < 0.01
  1. Group A: bonded with the direct technique; group B: bonded with the indirect technique. Detachment number is considered in total and in sections. The number of bonded brackets and bond failure are reported and below the detachment percentage. ns, not significant.