Aim: The aim of this article is to evaluate the influence of immediate and delayed finishing and polishing procedures with two different types of polishing systems on the surface roughness and microhardness of composite resin.
Materials and methods: A total of 60 samples of nanocomposite (Filtek Z350) were prepared and divided into three equal groups (n=20). The control group (Group A; n = 20) received no finishing and polishing treatment. Finishing and polishing of remaining samples were done immediately and after 24 hours by Astropol (Group B; n=20) and Super Snap (Group C; n=20) polishing system. After the polishing procedures, average surface roughness (Ra) was assessed with a surface profilometer. The microhardness was determined using a Vickers hardness test. The data were obtained and statistically analysed.
Results: The smoothest surfaces were noticed with the control group. The Super-Snap polishing system showed statistically significant less surface roughness compared with Astropol. The microhardness did not show any significant variations after immediate finishing and polishing with the two systems but delayed polishing showed significantly better results than immediate polishing, control groups have shown lowest surface roughness and microhardness values.
Conclusion: It can be concluded that the use of Super-Snap polishing system resulted in smoother surface with nanocomposite material studied compared with Astropol.
The delayed finishing and polishing procedure obtained better surface microhardness values.
Clinical significance: Immediate and delayed finishing procedure can affect the physical properties and performance of resin composites.
Impact Factor
2022: 6.012
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