• 文献标题:   The Influence of Graphene in Improvement of Physico-Mechanical Properties in PMMA Denture Base Resins
  • 文献类型:   Article
  • 作  者:   BACALI C, BADEA M, MOLDOVAN M, SAROSI C, NASTASE V, BALDEA I, CHIOREAN RS, CONSTANTINIUC M
  • 作者关键词:   denture, grapheneag nanoparticle, polymethyl methacrylate, mechanical characterization, water absorption
  • 出版物名称:   MATERIALS
  • ISSN:   1996-1944
  • 通讯作者地址:   Babes Bolyai Univ
  • 被引频次:   9
  • DOI:   10.3390/ma12142335
  • 出版年:   2019

▎ 摘  要

The clinical performances of dental materials depend on their mechanical profiles, determining their long-term deformation and wear resistance. This paper describes a study on the mechanical properties, water absorption and morphological properties of a polymethyl methacrylate (PMMA) resin enriched with graphene-silver nanoparticles (Gr-Ag). Two different concentrations-1 and 2 wt.% of Gr-Ag were loaded into the PMMA material. For the mechanical characterization, the compression behavior, flexural strength and tensile strength were evaluated. Optical microscopy in polarized light and scanning electron microscopy were used for filler analysis. The filler addition led to an improvement in all mechanical properties, with slight changes being derived from the filler content variation. Gr-Ag use led to an increase in the applied maximum loads. Moreover, 1 wt.% Gr-Ag determined an increase of 174% in the modulus of rupture, which indicates high flexibility.