Summary. Multilayered zirconia products manufactured with distinct yttria contents by layer have lessen flexural energy than All those produced with gradient shade know-how and the same yttria information for each layer. Thus, a variety of things such as the variety of prostheses, nesting strategies of prostheses throughout the zirconia disc, https://www.directivepublications.org/journal-of-dentistry-and-oral-research/