Long-term stability of an injection-molded zirconia bone-level implant: A testing protocol considering aging kinetics and dynamic fatigue

Based on well-documented clinical outcome, oral implants made from titanium are a valid treatment option in patients care when replacing missing or deteriorated teeth [1]. For patients opposing metals, oral implants made from polycrystalline zirconium dioxide represent the only nowadays available alternative [2]. Zirconium dioxide (ZrO2, zirconia) presents the phenomenon of allotropy, characterized by temperature-dependent crystal structures [3]. When stabilizing the tetragonal phase at room temperature, the polymorphous character of zirconia allows for stress-induced phase transformation toughening (PTT) [4].

Source: Dental Materials - June 19, 2017 Category: Materials Science Authors: Benedikt C. Spies, Madeleine E. Maass, Erik Adolfsson, Valter Sergo, Tobias Kiemle, Christoph Berthold, Elisa Gurian, Stefano Fornasaro, Kirstin Vach, Ralf-Joachim Kohal Source Type: research