In Vitro Determination of Genotoxicity Induced by Brackets Alloys in Cultures of Human Gingival Fibroblasts

Table 2

Genotoxicity (comet assay: tail moment) in cultures of human gingival fibroblasts induced by eluates obtained from brackets.

Bracket alloys	Comet assay	Increment of genotoxicity	value
SS	0.805 ± 0.002	3.79	<0.0001
Ni-Ti	3.588 ± 0.137	16.92
Co-Cr	0.724 ± 0.015	3.41
PC-AO	0.828 ± 0.019	3.90
MC-AO	0.832 ± 0.012	3.92
Positive control	0.212 ± 0.009

Kruskal–Wallis. SS: stainless steel; Ni-Ti: nickel-titanium; Co-Cr; cobalt chromium; PC-AO: polycrystalline Al₂O₃; MC-AO: monocrystalline Al₂O₃; comet assay: DNA damage percentage is expressed in mean and standard deviation. n = 10 per each group.