Effect of Long-Chain Silane on Mechanical Properties of Experimental Resin Composites

Autor: Madeline Jun Yu Yon, Jukka P. Matinlinna, James K. H. Tsoi, Pekka K. Vallittu, Lippo V. J. Lassila
Rok vydání: 2023
Předmět:
Zdroj: Silicon.
ISSN: 1876-9918
1876-990X
DOI: 10.1007/s12633-023-02462-y
Popis: Purpose To investigate mechanical properties of experimental resin composites contain 8-methacryloxyoctyltrimethoxysilane (MOS) and a commonly used silane, 3-methacryloxypropyltrimethoxysilane (MPS). Materials and methods MOS and MPS were hydrolysed in 95vol% ethanol solution at pH 4 for 1h before silanisation of SiO2-based bioactive glass powder fillers (Ø 1.0µm, Schott, Germany) at 3, 6, 9 and 12wt% of silane. After drying in a vacuum oven (80°C, 5kPa, 2h) they were mixed with a monomer mixture of urethane dimethacrylate and triethylene glycol dimethacrylate in a 70:30 weight ratio, camphorquinone 0.7wt% and 2-(dimethylamino)ethyl methacrylate 0.7wt% to produce eight experimental groups of resin composites with a filler load of 72.7wt%. After photopolymerisation for 25 min and post-curing at room temperature (24h), uniform rectangular beams were cut out for the three-point bending test (2mm × 2mm × 25mm, n = 8). The surface Vickers microhardness (VHN) test (press-load 2.94N for 10s, n = 6; Duramin 5, Struers) was performed before observation under 3-D optical microscopy. Statistical analysis was performed using ANOVA followed by the Tukey post hoc test (p
Databáze: OpenAIRE
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