International Journal of Materials Sciences

  • Year: 2010
  • Volume: 5
  • Issue: 2

Structural Evolution of Cergo Ceramics during Heat-Pressing

  • Author:
  • Mei Liua, Yang Xiaa, Feimin Zhang iven-names>a,, Ning Gub
  • Total Page Count: 11
  • DOI:
  • Page Number: 245 to 255

aInstitute of Stomatology, Nanjing Medical University, 136 HanZhong Road, Nanjing, 210029, People's Republic of China.

bState Key Laboratory of Bioelectronics, Southeast University; Jiangsu Laboratory for Biomaterials and Devices, 2 SiPaiLou Road, Nanjing, 210096, People's Republic of China.

*Corresponding author E-mail: .

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Abstract

Cergo (DeguDent, Hanau, Germany) dental ceramics were heat-pressed followed the manufacture's instruction. Whole-spectrum direct-reading inductively coupled plasma optical emission spectrograph and ultraviolet visible spectrophotometer were used to characterize the chemical composition. X-ray diffractometer and scanning electron microscope were used to characterize the crystal form and morphology. Thermogravimetric/differential thermal analyzer was applied to elucidate the crystallization kinetics. The mechanical properties (microhardness and density) were measured. The data were analyzed with equal variance followed by two-sample t tests, and significant increase was found (P<0.05). Tetragonal leucite crystals were found embedded in the glass matrix after heat-pressing.

Keywords

heat-pressing, dental ceramics, microstructure, Cergo