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Table 3 Comparison of failure patterns (ARI) between FRC and MSW groups

From: “Clinical comparison of bond failure rate between two types of mandibular canine-canine bonded orthodontic retainers- a randomized clinical trial”

Failure pattern (ARI) FRC MSW Total Significance (P-value)*
0 45 (62.5%) 27 (37.5%) 72 < 0.001
1 18 (85.7%) 3 (14.3%) 21
2 3 (20%) 12 (80%) 15
3 1 (12.5%) 7 (87.5%) 8
  1. Note: (calculated percentages are row percentages)
  2. ARI adhesive remnant index, FRC Fiber reinforced composite, MSW Multistranded stainless steel wire
  3. *Significant at 0.05 (Chi-square test)