Paper Title:
Evaluation of Glass Infiltration Speed within Dental CAD/CAM Alumina at Different Temperatures
  Abstract

Objective: to investigate glass infiltrating rates (depth/time) within dental CAD/CAM alumina at different temperatures. Methods: micron α-alumina powder was prepared with cold isostastic pressure at 250 MPa and sintered at 1450°C. The presintered alumina specimens were then infiltrated with special glass at 1150°C, 1200°C and 1250 °C. The infiltrating depths and time to form the infiltrate at the different temperatures were evaluated. Results: As the infiltrating temperature increased, the viscosity of the infiltrating glass decreased, and the infiltrating depth increased. A 1 mm infiltration depth into the presintered alumina at 1150°C, 1200°C and 1250°C required 95 min, 22 min and 8 min, respectively. Conclusion: An optimal infiltrating time required to reach a suitable infiltration depth into the presintered alumina was observed at 1200°C, an important finding for clinical applications at this commonly used furnace temperature.

  Info
Periodical
Edited by
Yiwang Bao, Li Tian and Jianghong Gong
Pages
314-317
DOI
10.4028/www.scientific.net/AMR.177.314
Citation
J. Liu, H. X. Lu, L. Q. Shao, B. Deng, Y. F. Yi, J. M. Tian, W. W. Zhang, N. Wen, "Evaluation of Glass Infiltration Speed within Dental CAD/CAM Alumina at Different Temperatures", Advanced Materials Research, Vol. 177, pp. 314-317, 2011
Online since
December 2010
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