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Dental Metal Matrix Composites: The Effects of the Addition of Titanium Nanoparticle Particles on Dental Amalgam.
Moxon, Ryan; Xu, Zhigang; Tettey, Felix; Chris-Okoro, Ikenna; Kumar, Dhananjay.
Afiliación
  • Moxon R; Department of Mechanical Engineering, North Carolina A & T State University, Greensboro, NC 27411, USA.
  • Xu Z; Department of Mechanical Engineering, North Carolina A & T State University, Greensboro, NC 27411, USA.
  • Tettey F; Department of Chemical, Biological and Bioengineering, North Carolina A & T State University, Greensboro, NC 27411, USA.
  • Chris-Okoro I; Department of Industrial and Systems Engineering, North Carolina A & T State University, Greensboro, NC 27411, USA.
  • Kumar D; Department of Mechanical Engineering, North Carolina A & T State University, Greensboro, NC 27411, USA.
Materials (Basel) ; 17(7)2024 Apr 04.
Article en En | MEDLINE | ID: mdl-38612175
ABSTRACT
Dental amalgams have been used by dentists for the restoration of posterior human teeth. However, there have been concerns about the release of mercury from amalgams into the oral cavity. The objective of the present research is to study the effect of titanium (Ti) nanoparticles on the microstructural mechanism of the release of mercury vapor in two commonly used brands of dental amalgam (the Dispersalloy 11.8% Cu; the Sybralloy 33% Cu). Ti powder was added to both the Dispersalloy and the Sybralloy in increments of 10 mg up to 80 mg. The addition of Ti powder to both brands of dental amalgam has been found to result in a considerable decrease in Hg vapor release. The decrease in the Hg vapor release due to Ti addition has been explained by the formation of strong Hg-Ti covalent bonds, which reduce the availability of Hg atoms for evaporation. The Ti atoms in excess of the solubility limit of Ti in Hg reside in the grain boundaries, which also reduces the evaporation of Hg from the amalgam. The binding of Hg with Ti via a strong covalent bond also results in a significant improvement in mechanical properties such as Vickers hardness.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos