爬行和压力强度的评估:散装与传统复合材料相比
Afrooz Nakhostin1, Narges Panahandeh2, Hossein Hosseini Toudeshky3
1Department of Restorative Dentistry, School of Dentistry, Arak University of Medical Sciences, Arak, Iran.
BMC oral health
|April 16, 2025
概括
随着酒精和水的储存,传统复合材料的爬行增加,而散装复合材料的爬行仍然不受影响. 无论存储介质如何,两种复合材料类型的压力强度随着时间的推移而有所改善.
科学领域:
- 牙科材料科学 牙科材料科学
- 聚合物科学 聚合物科学
- 生物材料工程 生物材料工程
背景情况:
- 复合修复容易受到口腔液体的降解.
- 了解存储介质和时间对复合材料性能的影响对于临床寿命至关重要.
研究的目的:
- 评估水和75%乙醇储存对散装和传统牙科复合材料的爬行和压力强度的影响.
- 为了比较X-tra fil (批量填充) 与Estelite Sigma,Grandio SO和Z250 (传统) 复合材料的行为.
主要方法:
- 25个复合样本的制造 (X-tra 镜头,Estelite Sigma,Grandio SO,Z250).
- 根据储存条件分为五组:不储存,24小时水,24小时乙醇,30天水,30天乙醇在37°C.
- 在储存后测量动态爬行和随后的压力强度.
主要成果:
- 传统的复合材料 (Estelite Sigma,Z250) 在乙醇储存24小时后表现出更高的爬行.
- 在乙醇储存30天后,GrandioSO显示出最大的爬行 (P<0.05).
- X-tra fil (散装填充) 爬行不受储存条件的影响 (P=0.065);压力强度随着30天的储存而增加.
结论:
- 酒精和水的储存显著增加了传统复合材料的爬行.
- 大量填充复合材料的爬行物耐受于储存介质和持续时间的影响.
- 两种复合材料类型的压力强度随着长时间的储存而提高,独立于储存介质.
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