Research Article
Zinc-Containing Hydroxyapatite Enhances Cold-Light-Activated Tooth Bleaching Treatment In Vitro
Figure 2
Biological assessment of Zn-HA (a) cck-8 analysis of proliferation of MC3T3 cells cultivated with Zn-HA leaching solutions for 1, 3, and 7 days. Compared with the control group, 2%, 4%, and 8% Zn-HA leaching solution treatment significantly reduced cell viability, while for 1 day and 3 days 1% Zn-HA leaching solution has an effect of promotion on the cell proliferation. (b) Morphological changes of MC3T3 cells after 24 h incubation with Zn-HA leaching solutions. (c) Antibacteria test of Zn-HA with different zinc concentration after incubation with Zn-HA solution for 24 h. Groups 2% and 4% Zn-HA and 8% Zn-HA significantly inhibited Streptococcus mutans, Lactobacillaceae, and Streptococcus sobrinus growth (). means there are statistical differences between these group and control group.
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