Table 4 Number of bonding site detachments per tooth and number of wire breakages per interdental area (location) of patients affected by unwanted tooth movements (study group) and nonaffected patients (control group). Wire breakages were seen only in the upper jaw
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 |