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Pregled bibliografske jedinice broj: 713883

Časopis

Autori: Majić Renjo, Marijana; Ćurković, Lidija; Štefančić, Sanja; Ćorić, Danko
Naslov: Indentation size effect of Y-TZP dental ceramics
Izvornik: Dental materials (0109-5641) 30 (2014), 12; e371-e376
Vrsta rada: članak
Ključne riječi: Monolithic zirconia; Y-TZP; Ceramics; Vickers hardness; Indentation size effect
Sažetak:
Objective: The purpose of this study was to investigate and analyze the indentation size effect (ISE) in Vickers hardness of monolithic yttria partially stabilized zirconia (Y-TZP) dental ceramics without and with the addition of dental dye A3. The ISE is analyzed using the Mayer law, a proportional specimen resistance (PSR) model and a modified proportional specimen resistance (MPSR) model. Methods: Two samples of Y-TZP dental ceramics, trade names BruxZir (provided by Glidewell Laboratories, CA, USA), were investigated. The first sample was polished Y-TZP and the second sample was polished Y-TZP with the addition of dental dye A3, by VITA Classical Shade Guide. The Vickers hardness was measured under the following loads: 0.49 N, 0.98 N, 1.96 N, 4.90, 9.81 N and 29.42 N. Thirty indentations were made on each sample, under each load. Relationships between the applied load, F, and the resulting indentation size, d, have been analyzed by the Mayer law, the PSR model and the MPSR model. Results: The Meyer index (n) for both Y-TZP dental ceramics is less than 2, which indicates that hardness is dependent on test loads. The PSR model and the MPSR model were used to calculate “true” Vickers hardness or load- independent hardness. Significance: All applied mathematical models are suitable for the data analysis, which is confirmed with high correlation coefficients, but the best correlation between measured values and mathematical models was achieved with the MPSR model with a correlation coefficient of 0.9999.
Izvorni jezik: ENG
Rad je citiran u
bazama podataka:
Web of Science: Science Citation
Current Contents Citation Index
MEDLINE
Web of Science: Science Citation Index Expanded
Scopus
Kategorija: Znanstveni
Znanstvena područja:
Kemijsko inženjerstvo,Strojarstvo,Dentalna medicina
URL Internet adrese: http://www.sciencedirect.com/science/article/pii/S0109564114005752
Broj citata:
Altmetric:
DOI: 10.1016/j.dental.2014.08.367
URL cjelovitog teksta:
Google Scholar: Indentation size effect of Y-TZP dental ceramics
Upisao u CROSBI: Marijana Majić Renjo (marijana.majic@fsb.hr), 9. Ruj. 2014. u 13:14 sati



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