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Rapid‐sintered dental zirconia for chair‐side one‐visit application
Author(s) -
Li Ling,
Zhao Chenyang,
Du Zhaofu,
Qiu Yuexiu,
Si Wenjie
Publication year - 2019
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13228
Subject(s) - materials science , cubic zirconia , universal testing machine , composite material , vickers hardness test , transmittance , sintering , ceramic , flexural strength , abutment , scanning electron microscope , diffractometer , crown (dentistry) , optical microscope , fracture toughness , dwell time , microstructure , bending , structural engineering , optoelectronics , medicine , clinical psychology , engineering , ultimate tensile strength
Abstract 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•m 1/2 , as well as adaptable optical transmittance and marginal adaptation.