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<p>We investigate the effect of ZnO nanoparticles (ZnO-N) mainly on the mechanical properties of zinc oxide eugenol (ZOE) cements compared to the commercially available bulk ZnO powder (ZnO-B). Our results revealed the polycrystalline structure and well-dispersed nanoparticles (NPs) of regular shapes corresponding to ZnO-N with an average crystallite size of 54.68 nm and energy band gap (<i>E</i><sub>g</sub>) value of 2.7 eV. The Vickers microhardness (<InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="43578_2025_1525_Article_IEq1.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="22" /> </InlineMediaObject> <EquationSource Format="TEX">\(H_{{\text{v}}}\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>H</mi> <mtext>v</mtext> </msub> </math></EquationSource> </InlineEquation>) measurements showed a clear predominance of mechanical parameters for ZOE-N over ZOE-B where an increase by about 60% was recorded. The indentation creep behavior of ZOE-N sample possessed dislocation creep at all investigated loads (2, 3, 5 N) judging from the conducted exponent stress values (15.89, 16.75, 18.41). This work presents an obvious enhancement in the mechanical performance of ZOE using ZnO-N making it more convenient as temporary dental filling materials opening the door for further investigation of their uses in dental applications.</p> Graphical abstract <p>Variation of <InlineEquation ID="IEq198"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="43578_2025_1525_Article_IEq198.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="22" /> </InlineMediaObject> <EquationSource Format="TEX">\(H_{{\text{v}}}\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>H</mi> <mtext>v</mtext> </msub> </math></EquationSource> </InlineEquation> as a function of the applied load for ZOE-N, ZOE-B and ZOE-M temporary filling samples. The XRDpattern and SEM of ZnO NPs are shown as insets</p>

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Synthesis and characterization of ZnO nanoparticles for dental applications: Improving the mechanical properties of the temporary dental filling materials

  • 期刊论文

  • 发表日期：

    2025年1月17日

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  • A. Srour,
  • A. Jaber,
  • A. Yassin,
  • Z. Srour,
  • Z. Harajli,
  • S. Isber,
  • W. Malaeb

摘要

We investigate the effect of ZnO nanoparticles (ZnO-N) mainly on the mechanical properties of zinc oxide eugenol (ZOE) cements compared to the commercially available bulk ZnO powder (ZnO-B). Our results revealed the polycrystalline structure and well-dispersed nanoparticles (NPs) of regular shapes corresponding to ZnO-N with an average crystallite size of 54.68 nm and energy band gap (Eg) value of 2.7 eV. The Vickers microhardness ( \(H_{{\text{v}}}\) H v ) measurements showed a clear predominance of mechanical parameters for ZOE-N over ZOE-B where an increase by about 60% was recorded. The indentation creep behavior of ZOE-N sample possessed dislocation creep at all investigated loads (2, 3, 5 N) judging from the conducted exponent stress values (15.89, 16.75, 18.41). This work presents an obvious enhancement in the mechanical performance of ZOE using ZnO-N making it more convenient as temporary dental filling materials opening the door for further investigation of their uses in dental applications.

Graphical abstract

Variation of \(H_{{\text{v}}}\) H v as a function of the applied load for ZOE-N, ZOE-B and ZOE-M temporary filling samples. The XRDpattern and SEM of ZnO NPs are shown as insets