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Table 6 Descriptive statistics for torsional play measurements divided by group and size

From: Dimensional variability of orthodontic slots and archwires: an analysis of torque expression and clinical implications

  Group 1 Group 2 Group 3
  0.019 × 0.025 archwire 0.021 × 0.025 archwire 0.019 × 0.025 archwire 0.021 × 0.025 archwire 0.019 × 0.025 archwire 0.021 × 0.025 archwire
Torsional play for UR1 bracket 15.84 ± 0.68 (15.00–16.51) 8.60 ± 0.54 (8.05–9.50) 11.42 ± 0.29 (11.05–11.74) 5.32 ± 0.52 (4.64–5.85) 13.44 ± 0.89 (12.43–14.31) 4.07 ± 0.44 (3.52–4.59)
Torsional play for UR3 bracket 14.19 ± 0.60 (13.47–14.80) 7.08 ± 0.48 (6.62–7.86) 11.07 ± 0.28 (10.70–11.38) 5.00 ± 0.52 (4.31–5.51) 15.86 ± 1.05 (14.68–16.88) 6.08 ± 0.57 (5.46–6.80)
Torsional play for UR4 bracket 15.42 ± 0.66 (14.61–16.08) 8.22 ± 0.52 (7.69–9.08) 12.50 ± 0.29 (12.12–12.81) 6.32 ± 0.53 (5.63–6.83) 13.91 ± 0.92 (12.87–14.82) 4.47 ± 0.46 (3.90–5.03)
  1. Mean ± SD (range); values are expressed in arc degrees
  2. Group 1 Astar Orthodontics, Group 2 SIA, Group 3 Sweden & Martina, UR1 upper right central incisor bracket, UR3 upper right canine bracket, UR4 upper right first premolar bracket
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