Table 5 Number of failures according to tooth type in the mandible for the .016″ × .022″ braided SS retainers (47 patients, 282 total bonded sites)
Number of failures | 43 (%) | 42 (%) | 41 (%) | 31 (%) | 32 (%) | 33 (%) | Total (%) |
|---|---|---|---|---|---|---|---|
0 (no failures) | 38 (80.9%) | 35 (74.5%) | 34 (72.4%) | 30 (63.9%) | 33 (70.3%) | 42 (89.4%) | 212 (75.1%) |
1 | 7 (14.9%) | 6 (12.8%) | 11 (23.4%) | 11 (23.4%) | 11 (23.4%) | 4 (8.5%) | 50 (17.7%) |
2 | 1 (2.1%) | 5 (10.6%) | 1 (2.1%) | 3 (6.4%) | 3 (6.3%) | 1 (2.1%) | 14 (5.0%) |
3 | 1 (2.1%) | 1 (2.1%) | 0 (0%) | 1 (2.1%) | 0 (0%) | 0 (0%) | 3 (1.1%) |
4 | 0 (0%) | 0 (0%) | 1 (2.1%) | 1 (2.1%) | 0 (0%) | 0 (0%) | 2 (0.7%) |
7 | 0 (0%) | 0 (0%) | 0 (0%) | 1 (2.1%) | 0 (0%) | 0 (0%) | 1 (0.4%) |
Total number of failures (%) | 9 (19.1%) | 12 (25.5%) | 13 (27.6%) | 17 (36.1%) | 14 (29.7%) | 47 (10.6%) | 70 (24.9%) |