A clear trend was observed, where the Ra values of each CAD-CAM material, including lithium disilicate glass, feldspathic porcelain, the polymer-infiltrated ceramic network, and the resin composite, increased as the concentration of AHS in the etchant increased.
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Bonding Pretreatment of Aesthetic Dental CAD-CAM Materials through Surface Etching with a Mixed Aqueous Solution of Ammonium Fluoride and Ammonium Hydrogen Sulfate.
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