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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:31 |
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Conference: Bucharest University Faculty of Physics 2021 Meeting
Section: Polymer Physics
Title:
Dental Ceramics During Heating Treatment Process, Comparative Survey. Alumina Versus Zirconia Ceramic
Authors:
Eduard GATIN (1,2), Catalin LUCULESCU (3), Stefan IORDACHE (4)
Affiliation:
1) University of Bucharest, Faculty of Physics, Materials Department, P.O. Box MG - 11, Magurele – Bucharest, Romania
2) University of Medicine “Carol Davila”, Faculty of Medicine, Blv. Eroii Sanitari 8, Sector 5, Bucharest, Romania
3) National Institute for Laser, Plasma and Radiation Physics, P.O. Box MG- 36, Magurele – Bucharest, Romania
4) University of Bucharest, 3Nano-SAE Research Centre, P.O. Box MG- 38, Magurele, Romania;
E-mail
masterdent2009@yahoo.com
Keywords:
dental ceramic, crystal grain, phase frozen, modeling
Abstract:
Nowadays, two of the most used dental ceramic materials alumina based on Al2O3 and zirconia-based on ZrO2 have been investigated regarding heating treatment process influences on manufacturing dental ceramic core for applied veneer and glazer in the dental laboratory. It was noticed that alumina ceramic is more affected at morphological level by the thermal process, predicting a grain size diameter control to a decreasing value, less or about dG = (1.137 ± 1.018) µm and almost constant pore diameter size dP ∿ 2 µm. Affected depth inside the material of alumina core caused by the thermal process, was estimated d = 7.40 ± 0.51µm. Smaller size for zirconia grains (morphologic not affected by the heating temperature process conditions involved in our study, just on structural level) is predicting modeling of alumina surface with zirconia acting as a grain stopper for the cooling period.
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