树脂复合材料的结合强度和边际适应以及与临床结果的相关性
A Peutzfeldt1, T Hug2, R J Wierichs2
1Department of Restorative, Preventive and Pediatric Dentistry, School of Dental Medicine, University of Bern, Switzerland; Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
概括
对于牙科修复材料的体外试验显示了与临床结果的微弱但显著的相关性. 这些发现支持在早期材料选择中使用体外结合强度和边际适应性试验.
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
- 临床牙科 临床牙科
背景情况:
- 预测牙科修复材料的临床性能是具有挑战性的,因为有许多变量.
- 现有的体外试验经常显示与临床发现的相关性很差.
- 这项研究研究了 in vitro 特性与牙科修复的临床成功之间的关系.
研究的目的:
- 为了确定体外牙结合强度和二类修复的边际适应.
- 为了将这些体外发现与来自大型数据集的临床结果相关联.
- 评估体外试验对预测临床性能的有效性.
主要方法:
- 使用复制技术和SEM测量了微拉伸 (μTBS) 和微剪切 (μSBS) 键强度和边缘隙间形成.
- 在24小时和6个月的储水后,测试了8种粘合剂和树脂复合材料组合.
- 利用了从直接恢复的回顾性多中心研究中获得的临床数据 (n=10,695).
主要成果:
- 在材料组之间观察到债券强度和边际调整的显著差异,长期储存有负面影响.
- 微拉伸键强度与I类恢复结果相关;微剪切键强度与II,III,IV和V类恢复结果相关.
- 边缘间隙形成和边缘骨折与II类修复的临床结果相关.
结论:
- 在体外,结合强度和边际适应性与在体外和体内使用相同材料时的临床结果有显著的,尽管很弱的相关性.
- 在体外试验可以成为最初选择牙科修复材料的有价值的工具.
- 进一步完善体外试验方法是有必要的,以提高临床性能的预测准确性.
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