This finding agrees with that of Alakkad et al [ 45 ], who discovered a relationship between the surface treatments (surface glazing) in increased fracture strength compared with polished surfaces for restorations made by CAD/CAM, with highly significant differences between the two surfaces of the tested samples, such as IPS e.max CAD, Celtra Duo, and IPS Empress CAD.
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Effect of Thermocycling on Color, Surface Characteristics, Compressive Fracture, and Fracture Modes of Prosthetic CAD/CAM Ceramics After Smokeless Tobacco Immersion.
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