对自粘树脂水泥的粘合强度和微硬度的影响
Nayra-Kawana Turini1, Sandrine-Bittencourt Berger1,2, Murilo-Baena Lopes1,2
1Department of Restorative Dentistry, School of Dentistry, University Anhanguera -UNOPAR, Londrina, Paraná, Brazil.
Journal of clinical and experimental dentistry
|July 11, 2024
概括
过期的保质期不会影响自粘树脂水泥的硬度或粘合强度. 这项研究没有发现任何显著的差异,这表明牙科应用的材料随时间的稳定性.
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
背景情况:
- 自粘树脂水泥提供了美学和粘合的优势,但有限制,如短的保质期.
- 调查过期保质期对水泥性能的影响对于临床可靠性至关重要.
研究的目的:
- 评估过期保质期对两个自粘树脂水泥的结合强度和硬度的影响.
- 为了确定超出制造商建议的延长存储是否会损害材料的完整性.
主要方法:
- 60个人类牙被分为两个水泥组 (3M U200,Kerr MaxCem Elite) 和三个保质期子组 (新,开口后6个月,开口后12个月).
- 使用推出测试评估了结合强度,并通过Knoop测试测量了微硬度.
- 统计分析包括Shapiro-Wilk,Kruskal-Wallis和ANOVA,Tukey的后期测试在5%的显著程度.
主要成果:
- 在不同材料,时间间隔或根三分之一 (p=0.483) 的Knoop硬度值中没有发现统计学上显著的差异.
- 同样,债券强度值在材料,时间或根三分之一方面没有显示出统计学上显著的差异 (p=0.237).
结论:
- 保质期,无论是在建议期限内还是超出,都没有显著影响测试的自粘树脂水泥的硬度或粘合强度.
- 这些发现表明,过期的自粘树脂水泥可能保持其物理和机械性能.
- 进一步的研究可以探索长期的临床性能和其他受保质期影响的属性.
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