The bar-shaped zirconia specimens had been Lower to include each of the layers from translucent to dentin In Multilayered Primary and Multilayered HTML groups. All specimens had been fully sintered immediately after cutting from multilayered zirconia discs and subjected to three-position flexural energy test using the universal screening device. Results. https://www.directivepublications.org/journal-of-dentistry-and-oral-research/