Progress in Orthodontics

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
Distilled water	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
Listerine	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
Oral B	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
Listerine Advance White	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
Oral B 3D White Luxe	SS	16.6 ± 5.7	25 ± 5	35 ± 5	65 ± 5

SD standard deviation

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