切割键强度的比较评估在单立体石和三种不同的核心构建材料之间
Ayben Şentürk1, Bora Akat1, Fehmi Gönüldaş1
1Faculty of Dentistry, Prosthetic Dentistry, Ankara University, 06500 Ankara, Turkey.
Journal of functional biomaterials
|September 26, 2025
概括
与玻璃离子体水泥相比,纳米混合复合树脂表现出与单体石相比更强的剪接强度. 这一发现强调了为牙科修复选择最佳的核心构建材料的重要意义.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料工程 生物材料工程
- 恢复性牙科 恢复性牙科
背景情况:
- 由于其强度和美学特点,单立体 (MZ) 修复越来越受欢迎.
- 核心构建材料与MZ的有效粘合对于长期的恢复成功至关重要.
- 评估不同核心材料的剪接强度 (SBS) 到MZ对于临床应用至关重要.
研究的目的:
- 为了比较纳米混合复合树脂 (NHCR),玻璃离子体水泥 (GIC) 和用加强的玻璃离子体水泥 (Zirconomer) 与单质 (MZ) 的剪切键强度 (SBS).
- 分析与与MZ结合的每个核心积聚材料相关的故障模式.
主要方法:
- 根据核心材料准备了60个单质石样本,并根据核心材料分为三组 (n=20):NHCR,GIC和.
- 标本经历了空气中的颗粒磨损,并与自粘双固化树脂水泥结合.
- 切割键强度测试是在24小时以37°C的温度储存水后进行的,并通过显微镜分析故障模式.
主要成果:
- 纳米混合复合树脂 (NHCR) 组显示出最高的平均SBS (48.32 ± 12.49 MPa),明显高于Zirconomer (14.19 ± 3.66 MPa) 和GIC (10.37 ± 4.21 MPa) (p < 0.001).
- 石的平均键强度高于GIC,但这种差异在统计学上并不显著.
- 观察和分类了粘合性,凝聚性和混合失效模式.
结论:
- 与传统的玻璃离子体水泥和合金增强的玻璃离子体水泥相比,纳米混合复合树脂对单体石具有优越的剪接强度.
- 烯提供了比GIC更好的性能,但与NHCR与单质烯的结合强度不匹配.
- 建议对表面处理和长期临床性能进行进一步的研究,以优化对单体石上核心构建材料的粘合效率.
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