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In-Vitro Comparative Evaluation Of The Physical Properties Of Three Dimensional-Printed And Milled High Performance Ceramics, Laura Torrecillas-Martinez
Aim: to investigate the potential role of 3D printing to produce zirconia
restorations and to assess the mechanical properties of the 3D printed zirconia.
Hypotheses: 1) The flexural strength of 3D printed yttria-stabilized zirconia is comparable or superior to milled yttria-stabilized, isostatic pressed zirconia, and 2) thermocycling and chewing simulation does not affect the flexural strength of 3D printed yttria-stabilized zirconia.
Material and methods: 30 bars of printed yttria-stabilized zirconia and 10 bars of milled yttria-stabilized, isostatic pressed zirconia were utilized in this study. Printed zirconia bars were divided in 3 groups (10 bars per group): untreated, thermocycling and chewing ...