我们是否正在接近开发一种新的基于酸的生物陶牙材料?
Letícia Florindo Pereira1, Lucas José de Azevedo-Silva1, Pedro Rodrigues Minim1
1Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Alameda Dr. Octávio Pinheiro Brisolla, 9-75, Vila Universitária, 17012-901 Bauru, SP, Brazil.
概括
这项研究开发了一种可持续的牛氧化牙陶,使用二氧化纳米颗粒. 虽然机械性能有所改善,但高化学溶解度意味着它不符合牙科陶的ISO标准.
科学领域:
- 生物材料科学 生物材料科学
- 材料工程 材料工程 材料工程
- 牙科陶 牙科陶 的使用.
背景情况:
- 酸 (HA) 是骨和牙的关键组成部分.
- 开发可持续且具有成本效益的牙科陶对于假肢至关重要.
- 二氧化 (TiO2) 纳米颗粒可以增强陶的性能.
研究的目的:
- 开发一种可持续的牛用酸 (HA) 牙陶.
- 为了研究TiO2纳米粒子添加 (5%和8%) 对HA陶的影响.
- 根据ISO 6872:2015标准评估微观结构,机械和化学性能.
主要方法:
- 牛的HA粉和TiO2纳米粒子被加工成磁盘.
- 单轴和同静压,然后在1300°C进行烧结.
- 描述包括XRD,SEM,EDS,断裂性,屈曲强度和可溶性测试.
主要成果:
- XRD证实了转化为β-三酸 (ß-TCP) 和酸 (CaTiO3) 的相变,并添加了TiO2.
- SEM显示了一个密集的矩阵,TiO2纳米粒子分布均.
- 使用TiO2,骨折性显著增加,而屈曲强度则下降. 所有的陶都超过了ISO可溶性极限.
结论:
- 牛类含有TiO2的HA显示了牙科陶中改善机械性能的潜力.
- 开发的陶不符合ISO 6872:2015标准,因为它具有很高的化学可溶性.
- 需要进一步的研究来解决临床应用的可溶性问题.
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