冠状牙中的无冲键强度:与剪键强度相比,一种标准化方法
Franz-Josef Schröter1, Nicoleta Ilie1
1Department of Conservative Dentistry and Periodontology, University Hospital, Ludwig-Maximilians-Universität München, Goethestr. 70, D-80336 Munich, Germany.
Materials (Basel, Switzerland)
|August 26, 2023
概括
牙粘合剂的推出试验显示出高失败率,并且无法可靠地区分粘合性能,与剪接键试验不同. 为了临床相关性,需要进一步修改.
科学领域:
- 牙科材料科学 牙科材料科学
- 粘合式牙科 粘合式牙科
- 生物材料测试 生物材料测试
背景情况:
- 临床现实需要可靠的体外粘合剂测试方法.
- 已建立的剪接试验提供了一个基准,但寻求具有不同几何形状的替代品.
- 腔体几何和配置因素显著影响粘剂性能和测试结果.
研究的目的:
- 为了将推出试验与在冠状牙上进行体外粘合试验的既定剪接试验进行比较.
- 评估推出试验的适用性,作为更好地反映临床腔体几何学的替代方案.
- 评估推出试验与剪接试验的区分能力,以评估牙粘合剂粘合强度.
主要方法:
- 对五种不同的牙粘合剂进行了标准化的推出和剪切粘合测试.
- 样本尺寸进行了调整,以实现两种测试方法之间的相似粘合面积.
- 测量了结合强度,并记录了由于牙骨折导致的无效测量.
主要成果:
- 推出的测试产生了高率的无效测量 (30%),主要是由于牙骨折.
- 推出试验未能在统计上区分不同粘合剂的粘合强度 (p = 0.367).
- 在比较粘合剂组时,尽管粘合面积相似,但在两种测试方法之间观察到显著差异.
结论:
- 研究的推出试验设置,尽管与粘接区域相匹配,但无法提供与牙粘合剂剪切粘合试验相同的辨别精度.
- 样品失败率高和差异化不足表明,推出试验需要在粘合牙科的常规使用中进行重大调整.
- 测试中的配置因子在测试之间有显著差异,可能会影响结果,并需要进一步调查以进行优化.
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