表面的变化和化合物释放从对齐器附件在体外 in vitro
Anna Iliadi1,2, Sevasti-Kiriaki Zervou3, Despina Koletsi4,5
1Department of Biomaterials, School of Dentistry, National and Kapodistrian University of Athens, Greece.
European journal of orthodontics
|June 17, 2024
概括
调整器的使用会改变复合材料的附着表面,导致磨损,并在一个星期内在水环境中释放树脂单体和降解产物. 这项研究评估了牙复合材料的材料变化和化学液.
科学领域:
- 生物材料科学 生物材料科学
- 牙科材料 牙科材料
- 聚合物化学 聚合物化学
背景情况:
- 牙复合材料附件对于清晰对齐器治疗至关重要.
- 了解它们的表面行为和口腔条件下化学物质的释放对于患者的安全和治疗疗效至关重要.
研究的目的:
- 为了评估与调整器使用的常规和可流动复合材料附件的表面变化 (形态,粗性,组成).
- 评估树脂单体及其降解产品在模拟口内条件的水环境中的释放.
主要方法:
- 使用常规 (C) 和可流动 (F) 复合材料附件和PET-G对齐器制造石框架.
- 模拟口内使用:浸泡水7天,并重复安装和取出对齐器.
- 附着表面的分析 (立体显微镜,光学分析,ATR-FTIR) 和化剂的组成 (LC-MS/MS,LC-HRMS).
主要成果:
- 在附着表面上观察到的磨损引起的缺陷 (划痕,骨折),在可流动复合材料中更为明显.
- 可流动复合材料显示出更大的形态变化和更高的解率,粗度明显降低 (Sc参数).
- 检测到树脂单体和降解产物的显著释放,在第7天的度下降.
结论:
- 调整器的使用显著影响复合材料附着面的完整性和降解.
- 在模拟对齐器治疗过程中,复合附件会将单体和水解剂释放到水环境中.
- 材料表面特征和降解受到对齐器接触和水性暴露的影响.
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