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首页> 外文期刊>Dental Materials Journal >Mechanical properties of a resin-modified glass ionomer cement for luting: effect of adding spherical silica filler
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Mechanical properties of a resin-modified glass ionomer cement for luting: effect of adding spherical silica filler

机译：树脂改性玻璃离子水门汀的机械性能：添加球形二氧化硅填料的作用

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摘要

This study investigated the effects of spherical silica filler (SSF) on the workability and mechanical properties of resin-modified glass ionomer cements for luting (RMGICL). Varying powder/liquid ratios (P/L=2.0, 2.2, 2.4, and 2.6) of a commercially available glass ionomer cement (Fuji Lute, GC Corp.) were mixed with SSF at different weight percentages (5, 7.5, and 10%). On film thickness, statistically significant effects of SSF addition were noted at 2.5 minutes after mixing started, notably at P/L=2.4 and 2.6 when 7.5 and 10 wt% of SSF were added. The same result was also obtained for consistency evaluation. On mechanical and bonding strengths to the tooth substrate, no statistically significant differences were observed among all the SSF weight percentages within each P/L ratio. SSF-added RMGICL at a higher powder/liquid ratio exhibited increased mechanical and bonding strengths when compared to a control without SSF addition, but nonetheless maintained the film thickness with no further increase.
机译：这项研究调查了球形二氧化硅填料（SSF）对树脂改性玻璃离子水门汀胶粘剂（RMGICL）的可加工性和机械性能的影响。将市售的玻璃离聚物水泥（Fuji Lute，GC Corp.）的各种粉/液比率（P / L = 2.0、2.2、2.4和2.6）与SSF以不同的重量百分比（5、7.5和10％）混合）。在膜厚度上，在混合开始后2.5分钟时注意到统计学上显着的SSF添加效果，特别是当添加7.5和10wt％的SSF时在P / L ＝ 2.4和2.6。一致性评估也获得了相同的结果。在对牙齿基体的机械强度和粘结强度上，在每个P / L比内的所有SSF重量百分比之间均未观察到统计学上的显着差异。与未添加SSF的对照相比，以较高的粉/液比添加SSF的RMGICL表现出增强的机械强度和粘合强度，但仍保持了膜厚，而没有进一步增加。

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