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Physical-chemical properties of dental composites and adhesives containing silane-modified SBA-15
Journal of the Mechanical Behavior of Biomedical Materials ( IF 3.3 ) Pub Date : 2018-02-09 , DOI: 10.1016/j.jmbbm.2018.02.009
Gedalias Custódio Martim , Vicente Lira Kupfer , Murilo Pereira Moisés , Andressa dos Santos , Paulo Henrique Maciel Buzzetti , Andrelson Wellington Rinaldi , Adley Forti Rubira , Emerson Marcelo Girotto

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 (Wsp and Wsl), 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.



中文翻译:

含硅烷改性SBA-15的牙科复合材料和粘合剂的物理化学性质

这项研究的目的是合成和表征经3-(甲基丙烯酰氧基)-丙基-三甲氧基硅烷(MPS)改性的介孔材料SBA-15和SBA-15,将其用作修复性牙科复合材料和胶粘剂中的无机填料,并对其主要性能进行评估。所得材料的物理化学性质。通过FTIR,BET和X射线对SBA-15和SBA-15 / MPS进行表征,并与TEGDMA,bis-GMA和商业球形二氧化硅相结合,制成牙科复合材料。然后,将中孔材料与TEGDMA,bis-GMA和HEMA结合在一起制成胶粘剂。为了比较结果,研究了仅包含商业球形二氧化硅的复合材料和粘合剂。一些物理化学性质,例如转化度(DC),抗弯强度(FS)和模量(FM),吸水率和溶解度(W sp和W sl),比表面积(BET)和可浸出组分进行了评估。SBA-15 / MPS可用于制备牙齿修复材料,与纯SBA-15牙科材料相比,具有一些可预见的优势,并且与商业球形二氧化硅牙科材料相比,具有改进的性能。一个重要的改进是,与对照组相比,基于改性SBA-15的牙科材料浸出的未反应单体的浸出量减少了约60%。

更新日期:2018-02-09
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