Mechanical Properties and Ion Release from Fibre-Reinforced Glass Ionomer Cement

Znanstveni rad - Izvorni znanstveni rad

• Autor: Anja Ivica
• Autor: Ivan Šalinović
• Autor: Silvana Jukić Krmek
• Autor: Sufyan Garoushi
• Autor: Lippo Lassila
• Autor: Eija Säilynoja
• Autor: Ivana Miletić
• Autorova ustanova: (Klinički bolnički centar Zagreb)
• Autorova ustanova: Sveučilište u Zagrebu; Stomatološki fakultet
• Znanstveno / umjetničko područje, polje i grana: BIOMEDICINA I ZDRAVSTVO; Dentalna medicina; Endodoncija i restaurativna dentalna medicina

Sažetak (engleski)

The aim of this study was to compare the mechanical properties and ion release from a commercially available resin-modified glass ionomer cement to a formulation reinforced by the addition of short glass fibres at various percentages. Methods: Three experimental groups were prepared by adding a mass ratio of 10%, 15% and 20% of short glass fibres to the powder portion of the cement from a capsule (GC Fuji II LC), while the control group contained no fibres. Microhardness (n = 12), fracture toughness, and flexural, compressive and diametral tensile strength (n = 8) were evaluated. To study ion release, readings were obtained utilising fluoro-selective and calcium-selective electrodes after 24 h, 7 days and 30 days (n = 12). The spatial distribution of fibres within the material was evaluated through scanning electron microscopy. The data were analysed using one-way ANOVA with a Bonferroni adjustment. Results: The findings suggest that elevating fibre weight ratios to 20 wt% results in improved mechanical properties (p < 0.05) in microhardness, flexural strength, diametral tensile strength and fracture toughness. In terms of ion release, a statistically significant difference (p < 0.001) was observed between the groups at the conclusion of 24 h and 7 days, when the fluoride release was much higher in the control group. However, after 30 days, no significant distinction among the groups was identified (p > 0.05). Regarding calcium release, no statistically significant differences were observed among the groups at any of the evaluated time points (p > 0.05). SEM showed the fibres were homogeneously incorporated into the cement in all experimental groups. Conclusions: Resin-modified glass ionomer enhanced with short glass fibres at a weight loading of 20% showcased the most favourable mechanical properties while concurrently maintaining the ability to release fluoride and calcium after a 30-day period.

• Ključne riječi (engleski): glass fibres; glass ionomer cements; fluoride release; reinforcement
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Polymers
• Brojčani podaci: vol. 16, br. 5, 607
• e-ISSN: 2073-4360
• DOI: https://doi.org/10.3390/polym16050607
• URN:NBN: urn:nbn:hr:127:869506
• Datum objave publikacije: 2024-02-23
• URL dokumenta: https://www.mdpi.com/2073-4360/16/5/607
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Datum i vrijeme pohrane: 2024-06-28 10:31:28