Evaluation of Biologic and Some Physical Properties of Flexible Resin Modified with Antimicrobial Nanostructures | ||
| Mansoura Journal of Dentistry | ||
| Article 7, Volume 6, Issue 2, April 2019, Pages 34-44 PDF (798.44 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/mjd.2019.199184 | ||
| Abstract | ||
| Objectives:: The present study was designed to evaluate the impact of addition of different antimicrobial nanostructures to flexible resin versus the conventional heat cured acrylic resin type regarding cell cytotoxicity, surface roughness and impact strength. Methods:Polyamide and heat cured polymethyl methacrylate were used in this study and both were modified with silver vanadate and titaniananorods at different concentrations. For cytotoxicity test a total number of 60 disc shaped specimens (30 for each type of resin), were used in cell vitality test. For Surface roughness, a total number of 40 disc shaped specimens for both types of of resin was tested using a two dimensional profilometer. For Impact strength, a total number of 40 rectangular shaped specimens for both types of resin were prepared and measured using impact testing machine using charpy method. Four way ANOVA test was used for cytotoxicity test and two way ANOVA was used for both surface roughness and impact tests. Means and standard deviations (SD) was calculated for the tested groups. Statistical analysis was conducted using SPSS version 16 (StatsiticalPackacge for scientific studies). The t test was used for all tests for comparison between groups. Results:Cytotoxicity of subdivision IAC4D2 (heat cured with 1% silver vandate after 48 hrs) was the highest value while IIBC4D1 (flexible with 1% titania after 24 hrs) was the lowest value. Surface roughness and impact strength of division IIBC4 (Flexible with 5% titania) was the highest while division IBC1 ((heat cured with 0 % titania) was the lowest. Conclusions:Silver nanorods have an adverse on cytotoxic effect of both flexible and heat cured acrylic resins. Titaniananorods are biocompatible materials. They gave no cytotoxic effect with flexible resin. Ttitaniananorods increased the impact strength of both flexible and heat cured acrylic resins. Flexible resin had less cytotoxic effect than heat cured acrylic resin. Flexible resin modified with titaniananorods had higher impact strength and surface roughness than those of heat cured acrylic resin. | ||
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