Abstract
Purpose Nanotechnology offers considerable scope in dentistry to improve dental treatment, care, and prevention of oral diseases through the use of nanosized biomaterials. This study assessed the effect of incorporating alumina nanoparticles (Al2O3 NPa) to the recently introduced alkasite-based restorative material (Cention N) on its mechanical properties and surface topographical features. Materials and Methods Alumina nanopowder was incorporated into the powder component of Cention N at 5 and 10% (w/w). The unblended powder was used as a control. Compressive strength was assessed using a universal testing machine. Surface microhardness and roughness were evaluated using the Vickers microhardness test and surface profilometer, respectively. Surface topography was inspected using a scanning electron microscope (SEM). Data were analyzed by ANOVA and Tukey's test (P < 0.05). Results Incorporation of either 5 or 10% (w/w) Al2O3 NPa into alkasite-based restorative materials (Cention N) increased both its compressive strength and surface microhardness. This increase was significant with the use of lower concentration Al2O3 NPa (5% w/w). Meanwhile, there was an increase in surface roughness values of Cention N modified with either 5 or 10% (w/w) Al2O3 NPa. This increase was only significant in the case of 10% (w/w) Al2O3 NPa. Conclusion Incorporation of 5% (w/w) Al2O3 NPa into the newly introduced alkasite-based restorative material (Cention N) seems to produce a promising restorative material with high compressive strength and surface hardness without adversely affecting its surface roughness properties. Thus, nanotechnology implementation into Cention N restorative material may be strongly helpful for a diversity of clinical applications.
Highlights
Various direct filling materials are available in dental markets shifting from amalgams to modern bulk-fill composites [1]
As the use of nanoparticles has become a significant area of research in the dental field, the purpose of this study is to evaluate the effect of incorporating the recently introduced alkasite restorative material, Cention N with alumina nanoparticles on its compressive strength, surface roughness, and microhardness and surface microstructure
Specimens’ powders were made by blending 5% and 10% (w/w) alumina nanoparticles powder with the Cention N powder by hand using a mortar and pestle for 10 min. e unblended powder was used as the control for all tests. e recommended powder/ liquid (P/L) ratio of 1.8/1 for Cention N restorative material was used in all prepared specimens. e 5 and 10% w/w of alumina NPa powder ratios were added to the Cention N powder before proportioning the powder with the liquid; the additional alumina powder ratios were accompanied by the reduction in the amount of Cention N powder
Summary
Various direct filling materials are available in dental markets shifting from amalgams to modern bulk-fill composites [1]. Amalgam and glass ionomer cement are considered basic filling materials. Ey are basic in terms of their long establishment, economical, and simplicity of use They are usually applied in bulk without adhesive, are self-curing, and do not need complicated dental equipment [2]. Composites have been the most widely used restorative materials in dentistry in recent years, with a wide variety of applications. They are considered expensive, timeconsuming, and technique sensitive [6]
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