Rapid‐sintered dental zirconia for chair‐side one‐visit application

To satisfy the requirement of dental chair‐side clinical technique, zirconia ceramics is required to be sintered in 1 hour; the effect of rapid‐speed sintering dwell time on dental zirconia was investigated. The relative density was measured through Archimedes method; Scanning electron microscopy and X‐ray diffractometer were employed to characterize the microstructures; Universal mechanical test machine and Vickers indenter were used to evaluate the mechanical properties; Spectrophotometer was utilized to analyze the optical transmittance, and optical microscope was used to estimate the marginal adaptation of zirconia crown with abutment. Previous results indicated that rapid‐speed sintering and dwelling at 1580°C for 20 minutes could help dental zirconia achieve adaptable clinical performances with bending strength of around 1151 MPa, hardness of 13.3 GPa, and fracture toughness of 5.92 MPa•m1/2, as well as adaptable optical transmittance and marginal adaptation.