Evaluation of the Effect of Different Types of Abrasive Surface Treatment before and after Zirconia Sintering on Its Structural Composition and Bond Strength with Resin Cement

Figure 1

AFM images of groups: PS, GS, A, B, C, D, E, and F. Groups A, B, and D abraded before sintering showed a larger grain with clearly visible grain boundaries. Groups C, E, and F were abraded after sintering; group D only showed clearly visible grains, while groups C and E showed barely visible grain boundaries with smaller grains.