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Table 4 Frequency table for ARI

From: Effect of remineralizing agents on bond strength of orthodontic brackets: an in vitro study

Groups ARI score
1 2 3 4 5
A1 1 (5%) 0 10 (50%) 8 (40%) 1 (5%)
B1 4 (20%) 2 (10%) 3 (3%) 10 (50%) 1 (5%)
C1 3 (15%) 1 (5%) 8 (40%) 6 (30%) 2 (20%)
A2 0 0 7 (35%) 7 (35%) 6 (30%)
B2 0 0 7 (35%) 9 (45%) 4 (20%)
C2 1 (5%) 2 (10%) 8 (40%) 9 (45%) 0
  1. Value of χ 2 = 47.25, d.f. = 20, significant difference (p < 0.05).