Influence of sintering temperature on translucency of yttria-stabilized zirconia for dental crown applications

Chin Chuin Hao, Andanastuti Muchtar, Che Husna Azhari, Masfueh Razali, Mohamed Aboras

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)13-18
Number of pages6
JournalJurnal Teknologi
Volume78
Issue number11-3
DOIs
Publication statusPublished - 2016

Fingerprint

Yttria stabilized zirconia
Sintering
Light transmission
Temperature
Microstructure
Light scattering
Spectrophotometers
Densification
Sedimentation
Field emission
Casting
Porosity
Scanning electron microscopy
Processing

Keywords

  • Colloidal processing
  • Sintering temperature
  • Slip casting
  • Translucency
  • Zirconia

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Influence of sintering temperature on translucency of yttria-stabilized zirconia for dental crown applications. / Hao, Chin Chuin; Muchtar, Andanastuti; Azhari, Che Husna; Razali, Masfueh; Aboras, Mohamed.

In: Jurnal Teknologi, Vol. 78, No. 11-3, 2016, p. 13-18.

Research output: Contribution to journalArticle

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