The influence of nanostructured alumina coating on bonding and optical properties of translucent zirconia ceramics : in vitro evaluation

Malgaj, Tine (author), Mirt, Tadej (author), Kocjan, Andraž (author), Jevnikar, Peter (author)

Thin, non-retentive, monolithic restorations fabricated from novel translucent zirconia ceramics are widely used in contemporary dentistry. Because of the chemical inertness of zirconia, debonding of such restorations remains the main clinical complication. Limited evidence on the bonding performance of novel translucent zirconia exists; therefore, the present study aimed to evaluate, in vitro, the shear-bond strength (SBS) of translucent zirconia modified with a nanostructured alumina coating (NAC). The SBS of resin cement to translucent zirconia, materials containing 3, 4 or 5 mol.% of yttria modified with NAC, was measured and related to airborne-particle abraded (APA) zirconia surfaces. Half of each of the specimen groups (n = 20) were subjected to 37,500 thermocycles in water. In addition, to evaluate the effect of NAC on thin translucent zirconia discs (n = 10), the translucency parameter (TP) was measured and compared with APA. The results were statistically analyzed using a t-test and one-way ANOVA. NAC provided higher resin-zirconia SBS compared to APA, not affecting the zirconia optical properties. APA, on the other hand, lowered TP for all types of zirconia. NAC did not impair the mechanical or optical properties of translucent zirconia materials and should be regarded as a zirconia pretreatment alternative to APA.

• Language: English
• Keywords: translucent zirconia, nanostructured alumina coating, airborne-particle abrasion, shear-bond strength, translucency parameter
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: MF - Faculty of Medicine
• Publication status: Published
• Publication version: Version of Record
• Year: 2021
• Number of pages: 14 str.
• Numbering: Vol. 11, iss. 9, art. 1126
• PID: 20.500.12556/RUL-136348
• UDC: 616.31
• ISSN on article: 2079-6412
• DOI: 10.3390/coatings11091126
• COBISS.SI-ID: 76732931
• Publication date in RUL: 25.04.2022

Record is a part of a journal

• Title: Coatings
• Shortened title: Coatings
• Publisher: MDPI AG
• ISSN: 2079-6412
• COBISS.SI-ID: 523035673

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 16.09.2021

Secondary language

• Language: Slovenian
• Keywords: prosojni cirkonij, prevleka iz nanostrukturirane glinice, obraba delcev v zraku

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: J2-9222
• Name: Izboljšanje zanesljivosti monolitne dentalne keramike iz cirkonijevega oksida

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0087
• Name: Keramični in komplementarni materiali za napredne inženirske in biomedicinske aplikacije