Residual strain mapping through pair distribution function analysis of the porcelain veneer within a yttria partially stabilised zirconia dental prosthesis

In recent decades the high strength, high toughness, excellent biocompatibility and appealing aesthetics of Yttria Partially Stabilised Zirconia (YPSZ) has ensured that this ceramic has become the restorative material of choice used in premium dental prostheses [1]. During the manufacture of these copings, YPSZ is coated with a porcelain veneer in order to match the shade and pearlescence of the patients ’ existing teeth and to reduce wear during occlusal contact [2]. However, along with these benefits this manufacturing approach is known to induce the primary failure mode of these prostheses: near interface chipping of the porcelain veneer [3].

Source: Dental Materials - November 30, 2018 Category: Materials Science Authors: Alexander J.G. Lunt, Philip Chater, Annette Kleppe, Nikolaos Baimpas, Tee K. Neo, Alexander M. Korsunsky Source Type: research