Skip to main content

Advertisement

Table 2 Type of first failure for the mandible

From: Survival of maxillary and mandibular bonded retainers 10 to 15 years after orthodontic treatment: a retrospective observational study

  .016″ × .022″ braided SS (N = 47) .027″ TMA (N = 41) Total for both retainers (N = 88)
Male (N = 12) Female (N = 35) Total (N = 47) Male (N = 13) Female (N = 28) Total (N = 41)  
0: intact bonding 5 14 19 (40.4%) 5 20 25 (61%) 44 (50%)
1: full retainer out and rebonded 1 0 1 3 2 5 6 (6.8%)
2: fracture 0 0 0 0 0 0 0 (0%)
3: detachment 0 10 10 4 3 7 17 (19.3%)
4: composite damage 5 11 16 1 3 4 20 (22.7%)
5: retainer replaced by a new retainer 0 0 0 0 0 0 0 (0%)
6: no retainer in situ at T3 1 0 1 0 0 0 1 (1.1%)
7: multiple types of failures at the same time 0 0 0 0 0 0 0 (0%)
Total failures per type of retainer 28 (59.6%) 16 (39%)
Total failures for both retainers   44 (50%)