Alhotan Abdulaziz, Raszewski Zbigniew, Alamoush Rasha A, Chojnacka Katarzyna, Mikulewicz Marcin, Haider Julfikar
Department of Dental Health, College of Applied Medical Sciences, King Saud University, Riyadh P.O. Box 12372, Saudi Arabia.
SpofaDental, Markova 238, 506-01 Jicin, Czech Republic.
J Funct Biomater. 2023 Jun 20;14(6):328. doi: 10.3390/jfb14060328.
Restorative composites are subjected to various influences in the oral cavity environment, such as high or low temperatures, the mechanical force generated during mastication, colonization of various microorganisms, and low pH, which may result from ingested food and the influence of microbial flora. This study aimed to investigate the effect of a recently developed commercial artificial saliva (pH = 4, highly acidic) on 17 commercially available restorative materials. After polymerization, the samples were stored in an artificial solution for 3 and 60 days and subjected to crushing resistance and flexural strength tests. The surface additions of the materials were examined in terms of the shapes and sizes of the fillers and elemental composition. When stored in an acidic environment, the resistance of the composite materials was reduced by 2-12%. Larger compressive and flexural strength resistance values were observed for composites that could be bonded to microfilled materials (invented before 2000). This may result from the filler structure taking an irregular form, which results in a faster hydrolysis of silane bonds. All composite materials meet the standard requirements when stored for a long period in an acidic environment. However, storage of the materials in an acid environment has a destructive impact on the materials' properties.
修复性复合材料在口腔环境中会受到各种影响，如高温或低温、咀嚼过程中产生的机械力、各种微生物的定植以及低pH值，低pH值可能由摄入的食物和微生物菌群的影响导致。本研究旨在调查一种最近开发的商业人工唾液（pH = 4，高酸性）对17种市售修复材料的影响。聚合后，将样品在人工溶液中储存3天和60天，并进行抗压强度和抗弯强度测试。从填料的形状和尺寸以及元素组成方面检查材料的表面添加物。当储存在酸性环境中时，复合材料的抗性降低了2 - 12%。对于可与微填料材料（2000年之前发明）粘结的复合材料，观察到更大的抗压强度和抗弯强度抗性值。这可能是由于填料结构呈不规则形式，导致硅烷键更快水解。所有复合材料在酸性环境中长期储存时均符合标准要求。然而，将材料储存在酸性环境中会对材料性能产生破坏性影响。
