Table 1. The mean concentrations of released ions based on the type of wire and bracket in μg/L .

Wire	Bracket	Cu	Fe	Cr	N
NiTi	Dentaurum	736.7	53.4	10.0	76.7
	American Ortho	466.7	53.4	10.0	83.4
	Shinye	10.0	416.76	10.0	2133.4
	ORJ	726.7	23.4	10.0	186.7
Stainless steel	Dentaurum	16.7	10.0	10.0	10.0
	American ortho	10.0	10.0	10.0	10.0
	Shinye	10.0	253.4	10.0	1866.7
	ORJ	546.7	910.0	206.67	323.4