Vpliv pogojev sintranja na mikrostrukturo in lastnosti dentalne cirkonijeve oksidne keramike : diplomsko delo

Cugmas, Ana (author), Anžel, Ivan (mentor), Rojko, Franc (comentor), Fošnarič, Miha (reviewer)

Uvod: Razvoj biokeramike je v zobozdravstvu omogočil večjo uporabo keramičnih materialov. Poleg ustreznih mehanskih lastnosti, ki so omogočile uporabo keramike v vseh področjih zobovja, imajo keramični materiali odlične optične lastnosti, ki se močno približajo izgledu zoba. V takšne namene se najpogosteje uporablja cirkonijeva oksidna keramika, ki se obdeluje s CAD/CAM tehnologijami in sodi med biokompatibilne materiale. Namen: V diplomskem delu raziskujemo vpliv pogojev sintranja na razvoj mikrostrukture preizkušancev iz cirkonijeve oksidne dentalne keramike. Ugotavljamo tudi vpliv mikrostrukture, ki nastane pri sintranju na mehanske in tehnološke lastnosti. Cilj raziskave je ugotoviti, kako različna priprava restavracij pred sintranjem vpliva na mehanske lastnosti materiala in obnašanje le-tega. Metode dela: Teoretični del diplomskega dela temelji na pregledu strokovnih člankov in ostale strokovne literature domačih in tujih avtorjev, ki smo jih našli v podatkovnih bazah na medmrežju. Literaturo smo iskali s ključnimi besedami: dentalna keramika, keramični materiali, cirkonijeva oksidna keramika, cirkonijev oksid, CAD/CAM. Rezultati: Priprava preizkušancev in izvedba praktičnega dela diplomske naloge je izvedena v zobnem laboratoriju, izvedba preizkusov in analiza vzorcev pa na Inštitutu za tehnologijo materialov na Fakulteti za strojništvo Univerze v Mariboru. Razprava in zaključek: Proces sintranja vpliva na rast kristalnih zrn in posledično na trdnost cirkonijevega oksida. Daljši kot je proces sintranja, bolj zrna rastejo, s tem pa se niža trdnost. Na drugi strani pa večanje zrn v materialu manjša porozne dele, kar ugodno vpliva na material.

• Language: Slovenian
• Keywords: diplomska dela, laboratorijska zobna protetika, dentalna keramika, keramični materiali, cirkonijeva oksidna keramika, cirkonijev oksid, CAD/CAM
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: ZF - Faculty of Health Sciences
• Place of publishing: Ljubljana
• Publisher: [A. Cugmas]
• Year: 2021
• Number of pages: 35 str., [4] str. pril.
• PID: 20.500.12556/RUL-134222
• UDC: 617.3
• COBISS.SI-ID: 91691523
• Publication date in RUL: 31.12.2021

CUGMAS, Ana, 2021, Vpliv pogojev sintranja na mikrostrukturo in lastnosti dentalne cirkonijeve oksidne keramike : diplomsko delo [online]. Bachelor’s thesis. Ljubljana : A. Cugmas. [Accessed 28 March 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=134222

Secondary language

• Language: English
• Title: Influence of sintering conditions on microstructure and quality of dental zirconium : diploma work

Abstract

Introduction: The development of bioceramics has made it possible to increase the use of ceramic materials in dentistry. Besides appropriate mechanical properties that have made it possible to use ceramics in all areas of the teeth, ceramic materials have excellent optical properties which come very close to the appearance of the tooth. Zirconium oxide ceramic, which is processed with CAD / CAM technologies and is a biocompatible material, is most commonly used for such purposes. Purpose: In this diploma work, we research the influence of sintering conditions on the development of the microstructure of examinees from zirconium oxide dental ceramics. We also determine the influence of the microstructure, formed during sintering, on mechanical and technological properties. The aim of the research is to determine, how different preparation of restaurants before sintering affects the mechanical properties of the material and its behavior. Methods: The theoretical part of the diploma work is based on a review of technical articles and other technical literature of domestic and foreign authors, who we found in databases on the Internet. We searched the literature with the key words: dental ceramics, ceramic materials, zirconium oxide ceramics, zirconium oxide, CAD / CAM. Results: The preparation of examinees and the implementation of the practical part of the diploma was executed in a dental laboratory. The execution of tests and analysis of samples was made at the Institute of Materials Technology at the Faculty of Mechanical Engineering, University of Maribor. Discussion and conclusion: The sintering process affects the growth of crystal grains and consequently the firmness of zirconium oxide. The longer the sintering process, the more grains grow and with that, the firmness of the material is lower. On the other hand, the growth of grains in the material reduces the porous parts, which has a beneficial effect on the material.

• Keywords: diploma theses, laboratory dental prosthetics, dental ceramics, ceramic materials, zirconium oxide ceramics, zirconium oxide, CAD / CAM