fig1
![Effect of artificial accelerated aging on surface roughness and color stability of different ceramic restorations](https://image.oaes.cc/a010073f-26c2-4d77-b7b3-7b1b5516dd4b/1648.fig.1.png)
Figure 1. Schematic diagrams. (A) General view of the teflon mold constructed for specimen fabrication; (B): longitudinal section in the mold; (C): cross section of the mold; (D): a monolithic disc; (E) a bi-layered disc
Figure 1. Schematic diagrams. (A) General view of the teflon mold constructed for specimen fabrication; (B): longitudinal section in the mold; (C): cross section of the mold; (D): a monolithic disc; (E) a bi-layered disc
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