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Influence of sintering temperature on translucency of yttria-stabilized zirconia for dental crown applications
Chin, Chuin Hao1, Andanastuti Muchtar2, Che Husna Azhar3, Masfueh Razali4, Mohamed Aboras5.
This study aims to investigate the effect of sintering temperature on the translucency
of yttria-stabilized zirconia (YSZ) for dental crown applications. YSZ suspension was
treated by colloidal processing and 24 h of sedimentation to eliminate agglomerates
and aggregates. The green bodies of YSZ were then shaped into pellets through slip
casting. These bodies were sintered into a final shape at 1450 °C–1650 °C. The densities
of the specimens were measured using Archimedes method. Light transmission of the
YSZ specimen was also evaluated using a spectrophotometer with an integrating
sphere. Morphological analysis was conducted with field-emission scanning electron
microscopy. Results showed that sintering temperature significantly influenced the
density, light transmission, and microstructure of YSZ. High sintering temperatures
produced YSZ with a compact and homogeneous microstructure and a high density.
Furthermore, the low light scattering effect on the porosity-free microstructure yielded
light transmission as high as 37% in YSZ sintered at 1650 °C. The optimal sintering
temperature was found to be 1600 °C, at which 34% light transmission was generated.
In conclusion, high sintering temperatures improved the translucency of YSZ. This effect
was attributed to effective densification of grains and elimination of pores at high
temperatures, thereby alleviating the light scattering effect of the pores. At the optimal
temperature, YSZ with high density and translucency and a compact microstructure
was formed.
Affiliation:
- Universiti Kebangsaan Malaysia, Malaysia
- Universiti Kebangsaan Malaysia, Malaysia
- Universiti Kebangsaan Malaysia, Malaysia
- Universiti Kebangsaan Malaysia, Malaysia
- Universiti Kebangsaan Malaysia, Malaysia
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Indexation |
Indexed by |
MyJurnal (2021) |
H-Index
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6 |
Immediacy Index
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0.000 |
Rank |
0 |
Indexed by |
Scopus 2020 |
Impact Factor
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CiteScore (1.4) |
Rank |
Q3 (Engineering (all)) |
Additional Information |
SJR (0.191) |
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