The effect of speed sintering on the optical properties and microstructure of multi-layered cubic zirconia.

Purpose: Speed sintering was introduced to fabricate time-efficient chairside restorations, however, its influence on the microstructure and optical properties of zirconia is still unclear. This study investigated the influence of speed sintering on the microstructure and optical properties of ultra-translucent multi-layered cubic zirconia.

Materials And Methods: Ultra-translucent cubic zirconia (Katana™ UTML; Kuraray Noritake Dental Inc.