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Table 7 Release of chromium ions from NiTi and SS wires at various time-points

From: Release of nickel and chromium ions from orthodontic wires following the use of teeth whitening mouthwashes

Cr (mean + SD)
  1 h 6 h 24 h 168 h
Distilled water NITI 16.6 ± 5.7 26.6 ± 5.7 31.6 ± 2.8 33.3 ± 2.8
SS 20 ± 0 23.3 ± 2.8 33.3 ± 2.8 45 ± 5
Listerine NITI 33.3 ± 2.8 48.3 ± 2.8 51.6 ± 2.8 61.6 ± 2.8
SS 28.3 ± 2.8 33.3 ± 2.8 45 ± 5 61.6 ± 2.8
Oral B NITI 28.3 ± 2.8 33.3 ± 2.8 40 ± 5 75 ± 5
SS 16.6 ± 5.7 20 ± 0 23.3 ± 2.8 28.3 ± 2.8
Listerine Advance White NITI 28.3 ± 2.8 31.6 ± 2.8 51.6 ± 2.8 140 ± 5
SS 28.3 ± 2.8 31.6 ± 2.8 41.6 ± 2.8 58.3 ± 2.8
Oral B 3D White Luxe NITI 20 ± 0 31.6 ± 2.8 45 ± 5 175 ± 5
SS 16.6 ± 5.7 25 ± 5 35 ± 5 65 ± 5
  1. SD standard deviation