Research Article

The Influence of Different Surface Cleansing Agents on Shear Bond Strength of Contaminated Lithium Disilicate Ceramic: An In Vitro Study

Figure 6

Surface characterization of specimens not etched with hydrofluoric acid 1,000x magnification (a); etched with hydrofluoric acid for 20 seconds at 1,000x magnification (b); and etched with hydrofluoric acid for 20 seconds at 10,000x magnification (c).