Reuse of ZrO2(Y2O3) Arising from Making Dental Implant - Characterization of Materials

Luiz Cláudio Lemos de Assis; Roberto de Oliveira Magnago; Camila Aparecida Araújo da Silva; Alexandre Fernandes Habibe; Gabriel Rocha Lellis Villanova; Claudinei dos Santos

doi:10.4028/www.scientific.net/MSF.798-799.632

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HomeMaterials Science ForumMaterials Science Forum Vols. 798-799Reuse of ZrO2(Y2O3) Arising from Making Dental...

Reuse of ZrO₂(Y₂O₃) Arising from Making Dental Implant - Characterization of Materials

Abstract:

The yttria stabilized zirconia, ZrO₂ (Y₂O₃) has been widely used in dental prosthesis manufactured by CAD/CAM technique. This material is developed in the form of pre-sintered blocks, which are machined by extracting various customized prosthesis and generating a loss of about 30% of material. ZrO₂(Y₂O₃) is notably a toughening for other ceramics, and has a high cost, so reusing discards these applications less noble, is strategically interesting. In this work the proposal is to recover discharges of ZrO₂ (Y₂O₃) arising from prosthetic laboratories, reprocess them in order to reduce the particles size and subsequently sintering, demonstrating the potential use in applications less noble in dentistry. Discharges Residual of ZrO₂-(Y₂O₃) were fragmented and then sieved to particle size separation. Powders of smaller than 63 μm were uniaxially pressed at different pressures. The compacts were characterized by the relative density showing green density of the order of 40%. After characterization, compacts were sintered at 1550°C-2h. The sintered material was characterized as its relative density and crystalline phases.

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Periodical:

Materials Science Forum (Volumes 798-799)

Pages:

632-637

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.798-799.632

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Online since:

June 2014

Authors:

Luiz Cláudio Lemos de Assis*, Roberto de Oliveira Magnago, Camila Aparecida Araújo da Silva, Alexandre Fernandes Habibe, Gabriel Rocha Lellis Villanova, Claudinei dos Santos

Keywords:

Characterization, Recycling, Sintering, ZrO₂(Y₂O₃)

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