预热对复合树脂的适应性,多孔性和强度的影响
K H Bolding1, A E Hill2, D Tantbirojn2
1College of Dentistry, University of Tennessee Health Science Center, Memphis, TN, USA.
概括
预热牙科复合树脂改善了处理能力,导致更好的适应性和更少的空隙在修复. 这种技术提高了与室温复合材料相比的物理性能和强度.
科学领域:
- 牙科材料科学 牙科材料科学
- 恢复性牙科 恢复性牙科
- 生物材料工程 生物材料工程
背景情况:
- 建议使用加热复合树脂来改善处理和降低粘度.
- 预热旨在增强适应性,并最大限度地减少牙科修复中的空隙.
- 了解预热对复合材料性能的影响对于临床应用至关重要.
研究的目的:
- 评估预热复合树脂对孔隙性,适应性和机械强度的影响.
- 为了比较使用预热复合材料与室温复合材料进行的修复.
- 为了确定预热是否会损害常规复合树脂的物理性能.
主要方法:
- 通过使用室温或预热 (68°C) 复合材料,将20个II类复合材料修复放置在类型牙中.
- 用立体显微镜评估了恢复的适应质量和空洞存在.
- 对直径拉伸强度的测试是在单立体和增量填充复合材料气上进行的.
主要成果:
- 预热复合材料修复显示出显著减少大空洞,并与腔壁和增量之间具有优异的适应性 (P < 0.05).
- 预热复合材料的直径抗拉强度高于室温复合材料,特别是在单体样本中 (P < 0.05).
- 预热改善了复合材料的处理,而不会对物理性能产生负面影响.
结论:
- 预热常规复合树脂可以提高其处理特性,类似于可流动复合材料.
- 该研究表明,通过预热复合材料,改进了适应性和减少了空洞.
- 预热复合树脂可以提高机械强度,是临床使用的可行技术.
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