The bar-formed zirconia specimens have been Slice to include all of the layers from translucent to dentin In Multilayered Key and Multilayered HTML teams. All specimens had been fully sintered following slicing from multilayered zirconia discs and subjected to three-level flexural energy examination using the universal screening machine. Results. The https://www.directivepublications.org/journal-of-dentistry-and-oral-research/