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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
  1. n number