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. 2017 Jul 19;7:5879. doi: 10.1038/s41598-017-05690-6

Figure 1.

Figure 1

Optical and scanning electron micrographs of SiS ZnO treated tooth sample. (a) Photo of tooth sample before fixing on silicon piece carrier. (b) Photo of tooth sample after SiS ZnO treatment, showing double sided carbon tape underneath. (c) Tooth tip imaged prior to breaking open the tooth along observable crack. (d) Same tip after breaking open tooth along crack region.