Benetti Ana R, Jacobsen Johan, Lehnhoff Benedict, Momsen Niels C R, Okhrimenko Denis V, Telling Mark T F, Kardjilov Nikolay, Strobl Markus, Seydel Tilo, Manke Ingo, Bordallo Heloisa N
Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200, Copenhagen, Denmark.
1] The Niels Bohr Institute, University of Copenhagen, DK-2100, Copenhagen, Denmark [2] European Spallation Source ESS AB, PO Box 176, SE-221 00 Lund, Sweden.
Sci Rep. 2015 Mar 10;5:8972. doi: 10.1038/srep08972.
The development of dental materials with improved properties and increased longevity can save costs and minimize discomfort for patients. Due to their good biocompatibility, glass ionomer cements are an interesting restorative option. However, these cements have limited mechanical strength to survive in the challenging oral environment. Therefore, a better understanding of the structure and hydration process of these cements can bring the necessary understanding to further developments. Neutrons and X-rays have been used to investigate the highly complex pore structure, as well as to assess the hydrogen mobility within these cements. Our findings suggest that the lower mechanical strength in glass ionomer cements results not only from the presence of pores, but also from the increased hydrogen mobility within the material. The relationship between microstructure, hydrogen mobility and strength brings insights into the material's durability, also demonstrating the need and opening the possibility for further research in these dental cements.
开发具有改进性能和更长使用寿命的牙科材料可以节省成本，并将患者的不适感降至最低。由于具有良好的生物相容性，玻璃离子水门汀是一种很有吸引力的修复材料。然而，这些水门汀在具有挑战性的口腔环境中生存的机械强度有限。因此，更好地了解这些水门汀的结构和水化过程可以为进一步的发展带来必要的认识。中子和X射线已被用于研究高度复杂的孔隙结构，以及评估这些水门汀内的氢迁移率。我们的研究结果表明，玻璃离子水门汀较低的机械强度不仅源于孔隙的存在，还源于材料内氢迁移率的增加。微观结构、氢迁移率和强度之间的关系为材料的耐久性提供了见解，也表明了对这些牙科水门汀进行进一步研究的必要性和可能性。
Zotero 插件
