Scherer Franziska, Wille Sebastian, Saure Lena, Schütt Fabian, Wellhäußer Benjamin, Adelung Rainer, Kern Matthias
Department of Prosthodontics, Propaedeutics and Dental Materials, School of Dentistry, Christian-Albrechts University at Kiel, Arnold-Heller-Straße 16, 24105 Kiel, Germany.
Functional Nanomaterials, Institute for Materials Science, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany.
Materials (Basel). 2024 Apr 29;17(9):2112. doi: 10.3390/ma17092112.
The aim of this study was to evaluate the influence of weight ratio, the shape of the precursor particles, and the application of a phosphate-monomer-containing primer on the mechanical properties of polymer infiltrated ceramic networks (PICNs) using zinc oxide. Two different types of zinc oxide particles were used as precursors to produce zinc oxide networks by sintering, each with two different densities resulting in two different weight ratios of the PICNs. For each of these different networks, two subgroups were built: one involving the application of a phosphate-monomer-containing primer prior to the infiltration of Bis-GMA/TEGDMA and one without. Elastic modulus and flexural strength were determined by using the three-point bending test. Vertical substance loss determined by the chewing simulation was evaluated with a laser scanning microscope. There was a statistically significant influence of the type of precursor particles on the flexural strength and in some cases on the elastic modulus. The application of a primer lead to a significant increase in the flexural strength and in most cases also in the elastic modulus. A higher weight ratio of zinc oxide led to a significantly higher elastic modulus. Few statistically significant differences were found for the vertical substance loss. By varying the shape of the particles and the weight fraction of zinc oxide, the mechanical properties of the investigated PICN can be controlled. The use of a phosphate-monomer-containing primer strengthens the bond between the infiltrated polymer and the zinc oxide, thus increasing the strength of the composite.
本研究的目的是评估重量比、前驱体颗粒形状以及含磷酸盐单体底漆的应用对使用氧化锌的聚合物渗透陶瓷网络（PICN）力学性能的影响。两种不同类型的氧化锌颗粒被用作前驱体，通过烧结制备氧化锌网络，每种颗粒有两种不同的密度，从而得到两种不同重量比的PICN。对于这些不同的网络，各构建两个亚组：一个在Bis-GMA/TEGDMA渗透之前应用含磷酸盐单体的底漆，另一个不应用。通过三点弯曲试验测定弹性模量和弯曲强度。用激光扫描显微镜评估咀嚼模拟测定的垂直物质损失。前驱体颗粒类型对弯曲强度有统计学显著影响，在某些情况下对弹性模量也有影响。底漆的应用导致弯曲强度显著增加，在大多数情况下弹性模量也显著增加。较高的氧化锌重量比导致显著更高的弹性模量。在垂直物质损失方面发现的统计学显著差异较少。通过改变颗粒形状和氧化锌的重量分数，可以控制所研究的PICN的力学性能。使用含磷酸盐单体的底漆可增强渗透聚合物与氧化锌之间的结合力，从而提高复合材料的强度。
