Alumina versus Zirconia Comparative Survey of Thermic Influence During Dental Ceramic Core Manufacturing Process

For dental ceramic restorations, the manufacturing process presumes a high temperature sample heating treatment process, more than 1,000°C for applied aesthetic veneer and glazer. The present study presents and analyzes a comparative survey for two dental ceramics regarding the link between the heat...

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Published in:Particulate science and technology 2013-03, Vol.31 (2), p.156-161
Main Authors: Gatin, E., Luculescu, C. R., Birjega, R., Ciobanu, L., Patrascu, I.
Format: Article
Language:English
Subjects:
Alumina
Aluminum oxide
Ceramics
Comparative analysis
Crystal structure
Dental ceramics
Dental materials
Failure
fracture toughness
Heating
heating treatment
High temperature
Manufacturing
phase frozen method
Restoration
Zirconium dioxide
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creator Gatin, E.
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description For dental ceramic restorations, the manufacturing process presumes a high temperature sample heating treatment process, more than 1,000°C for applied aesthetic veneer and glazer. The present study presents and analyzes a comparative survey for two dental ceramics regarding the link between the heating treatment and reported cases of fractures and failure (delamination) of ceramic core. Two different dental ceramics samples were investigated: alumina based ceramic, respectively zirconia based ceramic materials. For zirconia based ceramic, changes concerning monoclinic (M) and tetragonal (T) crystalline phases occur and peak intensity variation from x-ray diffraction patterns are observed during heating process. For alumina based ceramic, the crystalline structure is less affected by the heating process but a different grain size and orientation were noticed during/after heating treatment. Both of them are affecting the strength and fracture toughness of the dental ceramic core.
doi_str_mv 10.1080/02726351.2012.675016
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subjects Alumina
Aluminum oxide
Ceramics
Comparative analysis
Crystal structure
Dental ceramics
Dental materials
Failure
fracture toughness
Heating
heating treatment
High temperature
Manufacturing
phase frozen method
Restoration
Zirconium dioxide
title Alumina versus Zirconia Comparative Survey of Thermic Influence During Dental Ceramic Core Manufacturing Process
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