Table 6 Theoretical torque loss for different square and rectangular archwires in 0.018- and 0.022-in. bracket slots (all with nominal dimensions—based on Dellinger [13])
From: Torque efficiency of square and rectangular archwires into 0.018 and 0.022 in. conventional brackets
Wire cross-section | Wire size (in.) | Slot size (in.) | Calculated torque loss (degrees) |
|---|---|---|---|
Square/rectangular | 0.018 × 0.018/0.022/0.025 | 0.018 | 0 |
Square | 0.019 × 0.019 | 0.022 | 9.96 |
Rectangular | 0.019 × 0.022 | 0.022 | 8.37 |
Rectangular | 0.019 × 0.025 | 0.022 | 7.24 |