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Contamination of zirconia surface during production in dental laboratory (CROSBI ID 548870)

Prilog sa skupa u časopisu | sažetak izlaganja sa skupa | međunarodna recenzija

Jakovac, Marko ; Živko-Babić, Jasenka ; Musić, Svetozar ; Carek, Andreja Contamination of zirconia surface during production in dental laboratory // Journal of dental research. 2009. str. 583-538

Podaci o odgovornosti

Jakovac, Marko ; Živko-Babić, Jasenka ; Musić, Svetozar ; Carek, Andreja

engleski

Contamination of zirconia surface during production in dental laboratory

In prosthodontic therapy, zirconia is nowadays very often-used material for crowns and bridges. Mechanical properties of zirconia crowns are in range with metal-ceramic crowns. Nevertheless, in clinical experience zirconia crowns have more failures than metal-ceramic ones. The most problems are associated with cracks between zirconia and layered ceramic. The studies in literature are often based on in vitro investigations and the samples made by manufacturer. The aim of this study was to investigate the surface of zirconia samples made by dental technician and to find possible contaminations. The samples were made of 5%Y-TZP (Cercon Ceramic). They were in disc shape (10x1mm) produced by CAD/CAM and sintered as declared by manufacturer (Cercon, Degudent). The SEM and EDS analyses of the samples were performed. The results showed differences between declared chemical composition and the composition found on the surface of the samples. One sample showed high value of aluminum on its surface. This study showed that the production of zirconia crowns in dental laboratory could cause a contamination of its surface. High values of aluminum found on surface were probably caused by diffusion or bonding of aluminum oxide from base during sintering phase. The differences between declared composition and composition found in this investigation could affect the bonding of zirconia and layered ceramic. Therefore, this study shows that there is a need for further investigation of zirconia as a dental material.

Zirconia; Contamination; Dental Laboratory

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Podaci o prilogu

583-538.

2009.

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objavljeno

Podaci o matičnoj publikaciji

Journal of dental research

Alexandria: International Association for Dental Research

0022-0345

Podaci o skupu

General Session & Exhibition of the IADR (87 ; 2009)

poster

01.04.2009-04.04.2009

Miami (FL), Sjedinjene Američke Države

Povezanost rada

Dentalna medicina

Indeksiranost