Laboratory evaluation of the surface of a nanofilled composite treated with various modern polishing systems

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Authors

  • S.I. Tokmakova 1, PhD in Medical Sciences, full professor of the Therapeutic dentistry Department
    ORCID: 0000-0003-0437-0079
  • Yu.V. Lunitsyna 1, PhD in Medical Sciences, associate professor of the Therapeutic dentistry Department
    ORCID: 0000-0002-2442-3361
  • O.V. Bondarenko 1, PhD in Medical Sciences, associate professor of the Therapeutic dentistry Department
    ORCID: 0000-0001-7280-7709
  • E.V. Mokrenko 2, PhD in Medical Sciences, associate professor of the Prosthodontics Department
    ORCID: 0000-0002-4286-3993
  • O.V. Rekel 1, 5th year student at the Institute of Dentistry
    ORCID: 0000-0001-6833-1728
  • 1 Altai State Medical University, 656038, Barnaul, Russia
  • 2 Irkutsk State Medical University, 664003, Irkutsk, Russia

Abstract

The preservation and long-term aesthetic effect of restoration largely depends on the quality of the finishing treatment of its surface. The aim of the study is to perform a laboratory study of the surface quality of a nanofilled composite treated with various polishing systems.
Material and methods.
An experimental study was conducted on 60 samples made of nanofilled composite. Depending on the polishing system used to finish the surface, the samples are divided into 6 groups. To assess the quality of polishing, visual analysis of macro photographs taken with stereo microscope (magnification 40), as well as laboratory assessment of the edge angle of wetting of the surface were carried out.
Results.
The results obtained during the visual evaluation were confirmed during a laboratory experiment to study the wetting edge angle. Samples treated with fine-grained and ceramic burs had higher wetting angle values and lower visual evaluation results. Polishers and finishers better polish the surface of the composite, but the perfect shiny gloss when using them cannot be achieved. The best aesthetic result is obtained when using a system of polishing discs of different degrees of abrasiveness.
Conclusion.
Creating a glossy finish requires a combination of several tools of varying degrees of abrasiveness and geometric shape. The results of the domestic polishing system are comparable with imported analogues.

Key words:

polishing, restoration, contact wetting angle, finishers, polishers

For Citation

[1]
Tokmakova S.I., Lunitsyna Yu.V., Bondarenko O.V., Mokrenko E.V., Rekel O.V. Laboratory evaluation of the surface of a nanofilled composite treated with various modern polishing systems. Clinical Dentistry (Russia).  2021; 24 (2): 16—22

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Received

April 9, 2021

Accepted

May 3, 2021

Published on

June 1, 2021