Table 3 The mean values yielded by as received and retrieved heat-activated orthodontic wires
From: The mechanical behavior of as received and retrieved nickel titanium orthodontic archwires
Manufacturer | Â | As received | SD | In vitro | SD | In vivo 1 | SD | In vivo 2 | SD |
|---|---|---|---|---|---|---|---|---|---|
Dentaurum | Plateau force, gf | 101.1 | 1.4 | 123.4 | 6.5 | Â | Â | 116.5 | 19.9 |
0.014 T° | Plateau slope, gf/mm | 4.0 | 1.3 | 6.2 | 1.2 |  |  | 6.1 | 7.8 |
| Â | Plateau length, mm | 1.4 | 0.3 | 1.3 | 0.2 | Â | Â | 1.4 | 0.3 |
Dentaurum | Plateau force, gf | 93.8 | 2.9 | 118.4 | 7.7 | 82.3 | 16.3 | 103.8 | 7.4 |
0.016 T° | Plateau slope, gf/mm | 8.4 | 0.7 | 8.9 | 1.7 | −4.1 | 10.0 | 6.51 | 0.8 |
| Â | Plateau length, mm | 1.8 | 0.3 | 1.6 | 0.2 | 1.8 | 0.5 | 1.7 | 0.3 |
Dentaurum | Plateau force, gf | 378.2 | 18.4 | 277.4 | 13.1 | 337.2 | 114.2 | 451.5 | 8.0 |
0.019X0.025 T° | Plateau slope, gf/mm | 52.3 | 15.0 | 52.8 | 8.2 | 43.8 | 21.5 | 58.6 | 15.6 |
| Â | Plateau length, mm | 2.1 | 0.3 | 2.0 | 0.2 | 1.9 | 0.2 | 1.5 | 0.3 |
Forestadent | Plateau force, gf | 95.2 | 0.5 | 90.3 | 2.5 | Â | Â | 116.5 | 4.7 |
0.014 T° | Plateau slope, gf/mm | 11.7 | 3.6 | 6.3 | 2.4 |  |  | 3.13 | 1.9 |
| Â | Plateau length, mm | 1.2 | 0.3 | 1.9 | 0.2 | Â | Â | 2.1 | 0.7 |
Forestadent | Plateau force, gf | 130.7 | 1.0 | 135.6 | 5.9 | 129.4 | 17.7 | 93.5 | 43.6 |
0.016 T° | Plateau slope, gf/mm | 5.4 | 1.2 | 3.7 | 3.8 | 0.7 | 9.4 | 3.8 | 6.9 |
| Â | Plateau length, mm | 1.2 | 0.2 | 1.2 | 0.2 | 1.3 | 0.4 | 2.0 | 1.3 |
Forestadent | Plateau force, gf | 392.4 | 37.3 | 365.6 | 9.0 | 384.3 | 55.8 | 349.3 | 41.3 |
0.019X0.025 T° | Plateau slope, gf/mm | 65.7 | 4.0 | 79.6 | 10.1 | 54.3 | 50.9 | 46.5 | 13.9 |
| Â | Plateau length, mm | 1.8 | 0.1 | 1.9 | 0.2 | 2.1 | 0.3 | 1.8 | 0.3 |
Ormco | Plateau force, gf | 126.0 | 5.5 | 112.6 | 36.2 | Â | Â | 145.8 | 8.4 |
0.014 T° | Plateau slope, gf/mm | − 3.7 | 3.4 | 3.8 | 14.6 |  |  | − 2.3 | 3.6 |
| Â | Plateau length, mm | 0.9 | 0.1 | 1.4 | 0.1 | Â | Â | 1.6 | 0.4 |
Ormco | Plateau force, gf | 163.8 | 10.5 | 144.9 | 31.9 | 163.2 | 22.2 | 160.3 | 14.4 |
0.016 T° | Plateau slope, gf/mm | − 6.9 | 2.5 | 13.9 | 1.1 | − 11.1 | 13.7 | − 8.9 | 6.0 |
| Â | Plateau length, mm | 1.6 | 0.5 | 0.9 | 0.2 | 1.9 | 0.2 | 1.2 | 0.4 |
Ormco | Plateau force, gf | 480.7 | 41.2 | 559.9 | 24.1 | 467.9 | 101.2 | 466.1 | 41.6 |
0.019X0.025 T° | Plateau slope, gf/mm | 12.6 | 37.0 | 58.6 | 43.7 | − 36.2 | 75.1 | − 17.6 | 8.8 |
| Â | Plateau length, mm | 1.6 | 0.2 | 1.9 | 0.4 | 2.4 | 0.4 | 2.7 | 0.2 |
G&H | Plateau force, gf | 65.3 | 2.2 | 43.1 | 3.6 | Â | Â | 47.6 | 2.1 |
0.014 T° | Plateau slope, gf/mm | 3.7 | 2.0 | 6.6 | 0.6 |  |  | 9.38 | 3.0 |
| Â | Plateau length, mm | 1.6 | 0.2 | 1.5 | 0.1 | Â | Â | 1.2 | 0.5 |
G&H | Plateau force, gf | 87.0 | 1.7 | 58.5 | 8.8 | 85.7 | 11.6 | 71.1 | 16.4 |
0.016 T° | Plateau slope, gf/mm | 9.1 | 2.1 | 8.5 | 5.3 | 11.0 | 2.1 | 17.7 | 4.3 |
| Â | Plateau length, mm | 1.9 | 0.3 | 1.7 | 0.4 | 2.1 | 0.1 | 1.4 | 0.3 |
G&H | Plateau force, gf | 326.6 | 14.6 | 266.5 | 6.6 | 161.4 | 150.3 | 296.0 | 21.1 |
0.019X0.025 T° | Plateau slope, gf/mm | 36.8 | 25.2 | 48.5 | 8.0 | 8.4 | 46.8 | 54.7 | 5.6 |
| Â | Plateau length, mm | 2.6 | 0.3 | 1.9 | 0.2 | 2.3 | 0.6 | 2.0 | 0.2 |
American Orthodontics | Plateau force, gf | 107.3 | 22.5 | 156.7 | 2.4 | Â | Â | 152.3 | 64.2 |
0.014 T° | Plateau slope, gf/mm | − 0.3 | 2.2 | 5.5 | 3.6 |  |  | 5.4 | 6.4 |
| Â | Plateau length, mm | 2.2 | 0.4 | 1.3 | 0.1 | Â | Â | 1.2 | 0.2 |
American Orthodontics | Plateau force, gf | 168.7 | 1.4 | 209.3 | 7.0 | 154.0 | 13.8 | 142.2 | 18.8 |
0.016 T° | Plateau slope, gf/mm | − 2.6 | 1.5 | 7.8 | 5.0 | − 5.2 | 5.9 | − 1.3 | 1.3 |
| Â | Plateau length, mm | 2.0 | 0.1 | 1.8 | 0.4 | 1.7 | 0.3 | 1.8 | 0.3 |
American Orthodontics | Plateau force, gf | 490.6 | 9.5 | 533.9 | 10.4 | 316.3 | 28.8 | 175.6 | 45.6 |
0.019X0.025 T° | Plateau slope, gf/mm | 22.3 | 0.8 | 75.6 | 18.3 | − 30.4 | 7.8 | − 20.4 | 32.9 |
| Â | Plateau length, mm | 2.6 | 0.1 | 3.0 | 1.8 | 1.5 | 0.7 | 1.4 | 0.6 |