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master's thesis
Svojstva cirkonijevog dioksida
2010. urn:nbn:hr:184:678454
Žakula, Danko
University of Rijeka
Faculty of Medicine
Department of Prosthodontics

Cite this document

Žakula, D. (2010). Svojstva cirkonijevog dioksida (Master's thesis). Rijeka: University of Rijeka, Faculty of Medicine. Retrieved from https://urn.nsk.hr/urn:nbn:hr:184:678454

Žakula, Danko. "Svojstva cirkonijevog dioksida." Master's thesis, University of Rijeka, Faculty of Medicine, 2010. https://urn.nsk.hr/urn:nbn:hr:184:678454

Žakula, Danko. "Svojstva cirkonijevog dioksida." Master's thesis, University of Rijeka, Faculty of Medicine, 2010. https://urn.nsk.hr/urn:nbn:hr:184:678454

Žakula, D. (2010). 'Svojstva cirkonijevog dioksida', Master's thesis, University of Rijeka, Faculty of Medicine, accessed 30 October 2024, https://urn.nsk.hr/urn:nbn:hr:184:678454

Žakula D. Svojstva cirkonijevog dioksida [Master's thesis]. Rijeka: University of Rijeka, Faculty of Medicine; 2010 [cited 2024 October 30] Available at: https://urn.nsk.hr/urn:nbn:hr:184:678454

D. Žakula, "Svojstva cirkonijevog dioksida", Master's thesis, University of Rijeka, Faculty of Medicine, Rijeka, 2010. Available at: https://urn.nsk.hr/urn:nbn:hr:184:678454

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Metadata
TitleSvojstva cirkonijevog dioksida
AuthorDanko Žakula
MentorMarica Šimunović Šoškić (mentor)
MBZ: 237345
GranterUniversity of Rijeka
Faculty of Medicine
(Department of Prosthodontics)
Rijeka
Defense date and country2010, Croatia
Scientific / art field,
discipline and subdiscipline		BIOMEDICINE AND HEALTHCARE
Dental Medicine
Prosthetic Dentistry
Abstract
Cirkonijev dioksid (ZrO2) je keramički materijal sa vrlo povoljnim mehaničkim svojstvima za izradu medicinskih pomagala. Cirkon stabliziran itrijevim oksidom (Y2O3) ima najbolja svojstva za ovakve primjene. Kada se primjeni opterećenje na ZrO2 površinu, kristalična modifikacija se suprotstavlja razvijanju pukotina. Otpor na pritisak ZrO2 je oko 2000 MPa. Cirkonska biokompatibilnost je proučavana u in vivo uvjetima; nije bilo nikakvih negativnih odgovora na ugradnju ZrO2 u kost ili mišić. In vitro testiranja su pokazala odsutnost promjena i dobru stabilnost stanica uzgojenih na ovom materijalu. Danas su dostupne cirkonske jezgre za fiksnoprotetske radove na prednjim i stražnjim zubima, kao i na implantatima. Cirkonski opacitet je vrlo koristan u raznim kliničkim situacijama, npr. za prikrivanje diskoloriranih zubi. Radiopaknost može pomoći u procijeni tijekom radiografskih kontrola. Cirkonski okviri se izrađuju pomoću kompjuterskih sustava modeliranja i proizvodnje, tzv. CAD-CAM tehnologija. Mehanička svojstva cirkonijevog dioksida su se pokazala superiornima prema ostalim bezkovinskim restauracijama. Klinička testiranja ukazuju na dobar uspjeh cirkonijskih fiksnoprotetskih nadomjestaka. Daljnja testiranja su potrebna kako bi se potvrdila primjena ZrO2.
Abstract (english)
Zirconia (ZrO2) is a ceramic material with adequate mechanical properties for manufacturing of medical devices. Zirconia stabilized with Y2O3 has the best properties for these applications. When a stress occurs on a ZrO2 surface, a crystalline modification opposes the propagation of cracks. Compression resistance of ZrO2 is about 2000 MPa. Zirconia biocompatibility had been studied in vivo; no adverse responses were reported following the insertion of ZrO2 samples into bone or muscle. In vitro experimentation showed absence of mutations and good viability of cells cultured on this material. Zirconia cores for fixed partial dentures (FPD) on anterior and posterior teeth and on implants are now available. Zirconia opacity is very useful in adverse clinical situations, for example, for masking of dischromic abutment teeth. Radiopacity can aid evaluation during radiographic controls. Zirconia frameworks are realized by using computer-aided design/manufacturing (CAD/CAM) technology. Mechanical properties of zirconium oxide FPDs have proved superior to those of other metal-free restorations. Clinical evaluations, which indicate a good success rate for zirconia FPDs. Further studies are needed to validate their application.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:184:678454
Study programmeTitle: Dental Medicine
Study programme type: university
Study level: integrated undergraduate and graduate
Academic / professional title: doktor/doktorica dentalne medicine (doktor/doktorica dentalne medicine)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2016-04-21 12:40:33