Effect of SiO2 and Al2O3 nanoparticles on wear resistance of PMMA acrylic denture teeth

Authors

  • Mohamed A Helal Professor, Department of Removable Prosthodontics, Faculty of Dentistry, Al-Azhar University, Cairo, Egypt https://orcid.org/0000-0002-9953-1420
  • Bin Yang Assistant Professor, Department of Restorative Dentistry, Illinois University, Chicago, USA
  • Esam Saad Assistant lecturer, Department of Removable Prosthodontics, Faculty of Dentistry, Al-Azhar University, Cairo, Egypt https://orcid.org/0000-0001-5946-0843
  • Mohamed Abas Department of Dental Biomaterials - Faculty of Dentistry - Al-Azhar University - Cairo - Egypt. https://orcid.org/0000-0003-2393-3826
  • Mohamed Reda Al-kholy Professor, Department of Removable Prosthodontics, Faculty of Dentistry, Al-Azhar University, Cairo, Egypt
  • Ahmad Y Imam Oral and Maxillofacial Prosthodontics Department - Faculty of Dentistry - King Abdulaziz University - Jeddah - Kingdom of Saudi Arabia https://orcid.org/0000-0002-2114-982X
  • Mohammed M. Gad Department of Substitutive Dental Sciences - College of Dentistry - Imam Abdulrahman Bin Faisal University - Dammam - Saudi Arabia. https://orcid.org/0000-0003-3193-2356

DOI:

https://doi.org/10.14295/bds.2020.v23i3.1999

Abstract

Objective: This study aimed to evaluate the wear resistance of acrylic denture teeth containing silicon dioxide (nano-SiO2) and aluminum dioxide (nano-Al2O3) nanoparticles. Material and Methods: Poly methyl methacrylate (PMMA) denture tooth material was used to denture tooth material was used to fabricate 84 specimens (n=10) containing nano-SiO2 and nano-Al2O3 in concentrations 0.1wt%, 0.3wt%, and 0.5wt% of acrylic powder. A two-body wear testing machine and digital microscope were used to measure the changes in weight loss and surface roughness respectively. One-way ANOVA and pair-wise Tukey’s post-hoc tests were used for data analysis (? = 0.05). Results: Nano-SiO2 modified teeth material demonstrated a significant increase in weight loss in comparison conventional artificial acrylic teeth material (p ? 0.05) while nano- Al2O3 modified teeth material demonstrated non-significant increase in weight loss except for 0.5% subgroup (p ? 0.05). There is no significant differences regarding roughness change after wear simulation among all tested groups (p > 0.05). Conclusion: Nano-Al2O3 nanoparticles exhibit less negative effect than nano-SiO2 so; it could be used with caution if necessary.

Keywords

Acrylic denture teeth; Al2O3 nanoparticles; SiO2 nanoparticles; wear resistance; surface roughness.

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Published

2020-06-30

Issue

Vol. 23 No. 3 (2020): Jul - Sep / 2020 - Published June 2020

Section

Clinical or Laboratorial Research