Open AccessEvaluation of Mechanical Properties and Antibacterial Activity of Nano Titania-Enriched Alkasite Restorative Material: An In Vitro Study
Author(s) -
Neven S Aref,
Reham M. Abdallah
Publication year - 2022
Publication title -
the open dentistry journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 25
ISSN - 1874-2106
DOI - 10.2174/18742106-v16-e2112130
Subject(s) - materials science , antibacterial activity , indentation hardness , compressive strength , solubility , nuclear chemistry , nano , surface roughness , composite material , nanoparticle , chemical engineering , chemistry , nanotechnology , microstructure , organic chemistry , bacteria , genetics , engineering , biology
Background: A biocompatible additive with the ability to establish antibacterial action for restorative materials without sacrificing their physical properties is always in demand. Nano titania (TiO 2 nanoparticles) was shown to have antimicrobial action against a wide range of microorganisms. Alkasite is a modern esthetic restorative material that has outstanding properties; however, it is deficient in antibacterial activity. Objective: TiO 2 nanoparticles (NPs) were included in alkasite, and both mechanical properties and antibacterial activity of the new formulations were assessed. Materials and Methods: Nano titania powder was coupled to alkasite powder in proportions of 3 and 5% (w/w). There were 105 specimens made in total. Evaluation parameters were compressive strength, surface microhardness, surface roughness, water sorption and solubility, and antibacterial activity. One and two-way ANOVA were used for the statistical analysis, followed by Tukey′s test ( p <0.05). Results: Both ratios of nano titania, 3 and 5% (w/w), significantly increased compressive strength, antibacterial activity against different pathogens, and decreased water solubility of alkasite ( p <0.05). Only 5% (w/w) nano titania-modified alkasite exhibited significant decrease in water sorption ( p <0.05). Conversely, an insignificant increase in microhardness and surface roughness was observed with both ratios, 3 and 5% (w/w) of nano titania ( p ˃0.05). Conclusion: Nano titania seems to be a very promising complementary additive to the alkasite restorative material, capable of generating considerable antibacterial effectiveness while also enhancing certain mechanical properties.