Summary. Multilayered Zirconia materials developed with distinct yttria contents by layer have lessen flexural strength than All those manufactured with gradient shade know-how and a similar yttria material for every layer. Thus, several components such as the form of prostheses, nesting approaches of prostheses inside the zirconia disc, and the https://www.directivepublications.org/journal-of-dentistry-and-oral-research/