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publicado em 15/01/2013 às 10h44:00
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Portuguese produce dental crowns cheaper and resistant

Team says secret is in vitro-ceramic materials used and how they are processed

 
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Foto: UA
José Maria Ferreira, responsible for Group Processing of Advanced Materials, Department of Materials Engineering and Ceramics AU
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José Maria Ferreira, responsible for Group Processing of Advanced Materials, Department of Materials Engineering and Ceramics AU

Investigators from Universidade de Aveiro in Portugal have developed a new material that excels in quality dental crowns used today.

The product is cheaper, more durable and more easily produced as compared with existing glass-ceramic material used. The secret is in the ingredients used and how they are processed, the researchers said.

The material also produced from the controlled crystallization of compounds glassy, ​​has a simplified manufacturing process which reduces the price.

The new product "has fewer components, in particular with respect to oxides, and results in improved thermal treatment", explains the researcher José Maria Ferreira. The investigator ensures that the material vitro-ceramic is cheaper, because it is simpler to manufacture and has a superior performance to the material currently used in dental crowns.

"We tested the compositions of vitro-ceramic materials which are on the market, processed in the same way and that our results fell short of the product obtained with our" notes Ferreira.

When some vitreous compositions are treated at an appropriate temperature, atoms have some mobility and can find the right partners to form crystalline structures which are more rigid and other mechanical properties that confer to the assembly. For specific applications, as is the case of dental crowns, staff and tuned studied the effect of constituents, and optimized to maximize the desired properties.

"The novelty of processing vitro-ceramic materials for manufacturing dental crowns is the optimization of the properties and perception of how they depend on the composition. We have control over the final product composition and how it is processed" concludes Ferreira.

Source: Isaude.net
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Dental crowns    vitro-ceramic materials    University of Aveiro    José Maria Ferreira   
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