Surface Roughness and Compressive Strength of Resin Modified Glass Ionomer Cement with the Addition of Zinc Oxide Nanoparticles

Titien Hary Agustantina 1, Nabilla Eka Dyas Putri 2, *, Risma Almufarrida Ihsani 2 Intan Nirwana 1 and Priyawan Rachmadi 1

1 Department of Dental Materials, Faculty of Dental Medicine, Airlangga University, Surabaya, Indonesia.
2 Department of Dental Science, Faculty of Dental Medicine, Airlangga University, Surabaya, Indonesia.
 
Research Article
World Journal of Advanced Research and Reviews, 2024, 23(03), 523–529
Article DOI: 10.30574/wjarr.2024.23.3.2622
 
Publication history: 
Received on 20 July 2024; revised on 01 September 2024; accepted on 03 September 2024
 
Abstract: 
Introduction: Resin modified glass ionomer cement (RMGIC) is a hybrid ionomer cement by modifying glass ionomer cement (GIC) with resin. Restoration surface roughness is related to the accumulation of food debris on a restoration. The cement has a lower compressive strength than enamel and dentin. Efforts to reduce surface roughness and increase the compressive strength of RMGIC, by adding zinc oxide nanoparticles powder to RMGIC powder. Objective: This research aims to analyze RMGIC with the addition of zinc oxide nanoparticles powder as much as 1%-5% of the total mixture of RMGIC and zinc oxide nanoparticles powder on surface roughness and compressive strength. Method: This study used five treatment groups, namely groups 2, 3, 4, 5, and 6, each of which was given the addition of 1%, 2%, 3%, 4%, and 5% of the total mixture of RMGIC and zinc oxide nanoparticles powder, as well as group 1 (control) without the addition of zinc oxide nanoparticles powder. Each group consisted of 4 replications with cylindrical samples (10 mm diameter and 2 mm height) for surface roughness test and 4 replications with cylindrical samples (4 mm diameter and 6 mm height) for compressive strength test. Surface roughness was tested using surface roughness measurement and compressive strength was tested using a universal testing machine. Results: The results of statistical analysis of surface roughness and compressive strength tests showed significant differences between sample groups. Conclusion: The addition of zinc oxide nanoparticles powder on RMGIC reduces surface roughness and increases compressive strength.
 
Keywords: 
Resin Modified Glass Ionomer Cement; Zinc Oxide Nanoparticles; Surface Roughness; Compressive strength
 
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