Physical-chemical properties of dental composites and adhesives containing SBA-15 silanized with 3-methacryloxypropyltrimethoxysilane

• Published in: Journal of the mechanical behavior of biomedical materials 2018-02, Vol.80, p.277-284
• Main Authors: Martim, Gedalias Custódio, Kupfer, Vicente Lira, Moisés, Murilo Pereira, dos Santos, Andressa, Rinaldi, Andrelson Wellington, Buzzetti, Paulo Henrique Maciel, Girotto, Emerson Marcelo, Rubira, Adley Forti
• Format: Article
• Language: English
• Subjects: Chemical Sciences; Other
• ISSN: 1751-6161; 1878-0180
• DOI: 10.1016/j.jmbbm.2018.02.009

The aim of this study was to synthesize and characterize mesoporous materials SBA-15 and SBA-15 modified with 3-(methacryloxy)-propyl-trimethoxysilane (MPS) to be used as inorganic filler in restorative dental composites and adhesives, and evaluate the main physical-chemical properties of the resulting material. The SBA-15 and SBA-15/MPS were characterized by FTIR, BET and X-Ray and combined with TEGDMA, bis-GMA and commercial spherical silica to produce dental composites. Afterwards, the mesoporous materials were combined with TEGDMA, bis-GMA and HEMA to make adhesives. To compare the results, composites and adhesives containing only commercial spherical silica were investigated. Some physical-chemical properties such as degree of conversion (DC), flexural strength (FS) and modulus (FM), water sorption and solubility (W sp and W sl), specific area (BET), and the leachable components were evaluated. The SBA-15/MPS can be used to prepare dental restorative materials, with some foreseeable advantages compared with pure SBA-15 dental materials and with improved properties compared with commercial spherical silica dental materials. An important improvement was that the dental materials based on modified SBA-15 presented a reduction of approximately 60% in leaching of unreacted monomers extracted by solvent compared to the control group.