From: 3D-analysis of unwanted tooth movements despite bonded orthodontic retainers: a pilot study
 | Study group (n = 44) | Control group (n = 43) | p-value | ||
---|---|---|---|---|---|
n | % | n | % | ||
Bonding site detachment (tooth) | |||||
13 | 7 | 15.9 | 7 | 16.3 | 0.963 |
12 | 12 | 27.3 | 9 | 20.9 | 0.489 |
11 | 10 | 22.7 | 6 | 14.0 | 0.291 |
21 | 7 | 15.9 | 5 | 11.6 | 0.563 |
22 | 11 | 25.0 | 9 | 20.9 | 0.652 |
23 | 8 | 18.2 | 9 | 20.9 | 0.747 |
33 | 8 | 18.2 | 5 | 11.6 | 0.391 |
32 | 10 | 22.7 | 5 | 11.6 | 0.171 |
31 | 6 | 13.6 | 8 | 18.6 | 0.528 |
41 | 10 | 22.7 | 4 | 9.3 | 0.088 |
42 | 11 | 25.0 | 5 | 11.6 | 0.107 |
43 | 11 | 25.0 | 5 | 11.6 | 0.107 |
Wire breakage (location) | |||||
13/12 | 2 | 4.5 | 0 | 0.0 | 0.157 |
12/11 | 0 | 0.0 | 0 | 0.0 | 1 |
11/21 | 3 | 6.8 | 0 | 0.0 | 0.081 |
21/22 | 1 | 2.3 | 0 | 0.0 | 0.320 |
22/23 | 2 | 4.5 | 1 | 2.3 | 0.157 |