树脂复合材料中的BPA污染水平决定了BPA的释放
Siemon De Nys1, Marko Turkalj1, Radu Corneliu Duca2
1KU Leuven, Department of Oral Health Sciences, BIOMAT & University Hospitals Leuven (UZ Leuven), Dentistry, Leuven, Belgium.
概括
牙树脂复合材料中的双A (BPA) 漏与初始的BPA杂质水平成正比. 树脂成分在BPA释放中起到了很小的作用,强调了需要高纯度单体的需求.
科学领域:
- 牙科材料科学 牙科材料科学
- 聚合物化学 聚合物化学
- 分析化学 分析化学
背景情况:
- 在牙科中广泛使用的树脂复合材料可能含有双A (BPA) 作为其单体中的杂质.
- 了解BPA从这些材料中的漏行为对于患者安全和材料选择至关重要.
- 关于BPA从实验性树脂复合材料的定量释放特征的数据有限.
研究的目的:
- 从含有已知数量的BPA的实验性树脂复合材料中量化二A (BPA) 的短期浸出.
- 研究不同树脂成分对BPA的释放率和程度的影响.
主要方法:
- 实验性树脂复合材料是用不同度的双甲 (BPA) (0~0.1%重量%) 制造的.
- 复合材料使用基单体BisGMA,BisEMA(3),或UDMA与TEGDMA作为稀释剂.
- 聚合样本在37°C的水中浸泡了7天,每天收集并通过UPLC-MS/MS.替换BPA量化媒介.
主要成果:
- 最初添加的双A (BPA) 的0.47%至0.67%在7天内从树脂复合材料中脱离出来.
- 在不同的基单体中,BPA化趋势是相似的,尽管观察到基单体组成的统计学上显著但微不足道的影响.
- 释放的BPA量与复合材料中存在的BPA初始度直接相关.
结论:
- 从树脂复合材料中释放的双甲 (BPA) 主要受初始杂质水平的控制,并且在很大程度上受到扩散控制.
- 树脂基质的组成在调节BPA出中起到次要作用.
- 制造商应优先使用最高纯度的单体,以尽量减少患者潜在的BPA暴露.
关键词:
BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA这就是 BisEMAEMA 的意思.这就是 BisGMAMA.双 A 是一种双.内分泌干扰物 干扰内分泌干扰物一个实验性的复合材料.基于树脂的牙科材料.更多相关视频
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