Table 5 Descriptive statistics of TAD positions
From: Temporary anchorage device usage: a survey among Swiss orthodontists
|  | Mean ± SD | Median | Percentiles | Minimum | Maximum | |
|---|---|---|---|---|---|---|
25th | 75th | |||||
Palatal implants | Â | Â | Â | Â | Â | Â |
  x coordinates (mm) | 0.5 ± 1.0 | 0.3 | 0.0 | 1.2 | −3.2 | 2.4 |
  y coordinates (mm) | 15.6 ± 3.0 | 15.2 | 14.0 | 17.0 | 10.2 | 25.6 |
Mini-screws | Â | Â | Â | Â | Â | Â |
  Patient's right side |  |  |  |  |  |  |
   x coordinates (mm) | −6.5 ± 1.6 | −6.9 | −7.4 | −5.6 | −9.8 | −3.4 |
   y coordinates (mm) | 15.4 ± 3.8 | 14.4 | 12.9 | 17.4 | 9.3 | 22.7 |
  Centre |  |  |  |  |  |  |
   x coordinates (mm) | 0.8 ± 1.3 | 1.0 | −0.2 | 1.5 | −1.5 | 3.3 |
   y coordinates (mm) | 15.3 ± 2.6 | 14.6 | 13.0 | 17.7 | 11.9 | 19.0 |
  Patient's left side |  |  |  |  |  |  |
   x coordinates (mm) | 7.0 ± 1.9 | 7.0 | 6.0 | 8.6 | 3.3 | 10.0 |
   y coordinates (mm) | 15.5 ± 3.8 | 14.1 | 13.0 | 19.8 | 9.5 | 20.8 |