Cirkonij u fiksnoj protetici

master's thesis

• Author: Davor Špehar
• Mentor: Marko Jakovac (mentor)
• Granter: University of Zagreb; School of Dental Medicine; Zagreb
• Defense date and country: 2006, Croatia
• Scientific / art field, discipline and subdiscipline: BIOMEDICINE AND HEALTHCARE; Dental Medicine

Abstract

Keramika, zajedno s metalom, bila je prvi umjetni materijal koji se javlja u stomatologiji, a prvu je primjenu našla u mobilnoj protetici za izradu zubi za protezu. Zbog krhkosti, keramika se nije mogla samostalno koristiti za izradu većih protetskih
konstrukcija pa su daljnja istraživanja bila usmjerena ojačavanju keramike dodavanjem različitih kemijskih elemenata. Cirkonijev oksid, odnosno dioksid (ZrO2) otkriven je tek krajem 18. stoljeća. Nakon otkrića cirkonijev dioksid bio je dugo vremena pomiješan sa rijetkim zemljanim oksidima korišten kao pigment za keramiku, a tek kasnije je počela njegova upotreba kao dodatka keramici.
Cirkonijev se dioksid pojavljuje u tri oblika: monoklinskom (M), tetragonskom (T) i kubnom (C). Nestabilnom cirkonij dioksidu dodaje se u određenom postotku magnezijev ili jitrijev oksid radi potpune ili djelomične stabilizacije i time omogućuje primjena u stomatologiji. U stomatologiji se danas cirkonijeva keramika koristi za izradu krunica, mostova, konfekcijskih kolčića i nadogradnji na implantatima. Za izradu krunica i mostova cirkonijeva keramika dolazi u kliničku upotrebu kao industrijski izrađen keramički materijal. Zbog ovakvog industrijskog postupka najčešće se obrađuje CAD/CAM tehnikom. Klinička priprema zuba odgovara preparaciji za metal -keramičke radove. Cirkonij-keramički konfekcijski kolčići dolaze kao gotovi proizvodi i najnoviji su keramički intrakanalni sustavi. Zbog boje i mehaničkih svojstava cirkonijevi kolčići se danas smatraju dobrim rješenjem za estetsku rehabilitaciju endodontski tretiranih zubi u fronti.

Abstract (english)

Ceramics, together with metal, was the first artificial material that appears in stomatology, and found its first application in mobile prosthetics, tooth-making for dentures. Because of its fragility, ceramics could not be used independently for major
prosthetic construction, so further research was targeted to its strengthening by addition of different chemical elements.
Zirconium oxide, i.e. dioxide (ZrO2) was discovered only at the end of the 18th century. After its discovery, it was for quite some time mixed with rare earth oxides and used as pigmentation for ceramics. Later it began to be used as ceramics
addition. Zirconium oxide occurs in three microstructure forms: monoclinic (M), tetragonal (T) and cubic (C). Certain percentage of magnesia or yttria oxide is added to unstable zirconium dioxide in order to stabilize it and therefore enable its
application in stomatology. Today, in stomatology, zirconium ceramics is used for crowns, bridges, posts and implants. With crowns and bridges, zirconium ceramics comes into clinical usage as industrially manufactured ceramic material. Because of such industrial procedure it is most frequently processed by CAD/CAM technique. Clinical tooth preparation is the same as for metal-ceramic works. Zirconium-ceramic posts come as ready-made products and the latest ceramic intracanal systems. Because of their colour and mechanical properties, zirconium posts are today considered good solution for aesthetic rehabilitation of endodontologically treated tooth fronts.

• Keywords: fiksna djelomična zubna proteza; ; cirkonij
• Keywords (english): Fixed Partial Denture; Zirconium
• Language: croatian
• URN:NBN: urn:nbn:hr:127:456441
• Study programme: Title: Integrated undergraduate and graduate university study of Dental Medicine; Study programme type: university; Study level: integrated undergraduate and graduate; Academic / professional title: doktor dentalne medicine (doktor dentalne medicine)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2024-06-21 10:13:48