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钙羟磷灰石纳米粒子作为牙齿树脂纳米复合材料的增强填充剂。

Calcium hydroxyapatite nanoparticles as a reinforcement filler in dental resin nanocomposite.

机构信息

National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar, 25120, Khyber Pakhtunkhwa, Pakistan.

出版信息

J Mater Sci Mater Med. 2021 Oct 3;32(10):129. doi: 10.1007/s10856-021-06599-3.

DOI:10.1007/s10856-021-06599-3
PMID:34601653
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8487884/
Abstract

The current study focuses on the fabrication of calcium hydroxyapatite (Ca(PO)(OH)) (HA) in a nanorange having whiskers- and cubic-shaped uniform particle morphology. The synthesized HA particles hold a promising feature as reinforcement fillers in dental acrylic resin composite. They increase the efficacy of reinforcement by length and aspect ratio, uniformity, and monodispersity. Therefore, the acrylic resin was reinforced with the as-synthesized monodispersed HA filler particles (0.2-1 Wt%). The presence of filler particles in the composite had a noticeable effect on the tribological and mechanical properties of the dental material. The morphological effect of HA particles on these properties was also investigated, revealing that cubic-shaped particles showed better results than whiskers. The as-fabricated composite (0.4 Wt%) of the cubic-shaped filler particles showed maximum hardness and improved antiwear/antifriction properties. Particle loading played its part in determining the optimum condition, whereas particle size also influenced the reinforcement efficiency. The current study revealed that particle morphology, particle size, uniformity, etc., of HA fillers, greatly influenced the tribological and mechanical properties of the acrylic resin-based nanocomposite. Improvement in the tribological properties of HA particle-reinforced acrylic resin composites (HA-acrylic resin) followed the trend as AR < CC < WC < CC.

摘要

本研究专注于制备纳米级的具有纤维状和立方体形均匀颗粒形态的羟基磷灰石 (Ca(PO)(OH)) (HA)。合成的 HA 颗粒作为牙科丙烯酸树脂复合材料中的增强填料具有很大的应用前景。它们通过长度和纵横比、均匀性和单分散性来提高增强效果。因此，将合成的单分散 HA 填充颗粒（0.2-1wt%）添加到丙烯酸树脂中。填料颗粒在复合材料中的存在对牙科材料的摩擦学和机械性能有显著影响。还研究了 HA 颗粒的形态效应对这些性能的影响，结果表明立方体形颗粒的效果优于纤维状。由立方体形填充颗粒制成的复合材料（0.4wt%）显示出最大的硬度和改善的耐磨/减摩性能。颗粒负载在确定最佳条件方面发挥了作用，而颗粒尺寸也影响了增强效率。本研究表明，HA 填充剂的颗粒形态、颗粒尺寸、均匀性等极大地影响了基于丙烯酸树脂的纳米复合材料的摩擦学和机械性能。HA 颗粒增强丙烯酸树脂复合材料（HA-丙烯酸树脂）的摩擦学性能的提高遵循 AR < CC < WC < CC 的趋势。

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