Conclusion. Multilayered zirconia supplies generated with different yttria contents by layer have reduced flexural toughness than Those people generated with gradient shade engineering and the identical yttria articles for each layer. Thus, numerous components like the sort of prostheses, nesting strategies of prostheses within the zirconia disc, and the desired https://www.directivepublications.org/journal-of-dentistry-and-oral-research/