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Evaluation of two different self-disinfection alginate impression material
Islam M Bendary1, Alaa A Omar2, Reham M Goda3
1Department of Conservative Dentistry, Faculty of Dentistry, Delta University for Science and Technology, Gamasa, 11152, Dakahlia, Egypt.
BDJ Open
|November 5, 2024
Summary
This study shows that adding povidone-iodine or silver nanoparticles to alginate impression materials creates self-disinfecting properties without negatively impacting mechanical performance. These antimicrobial alginates effectively inhibit microbial growth while maintaining detail reproduction and elastic recovery.
Area of Science:
- Dental Materials Science
- Antimicrobial Technology
- Biomaterials Engineering
Background:
- Alginate impression materials are widely used in dentistry.
- Contamination of alginate impressions can lead to microbial growth.
- Developing self-disinfecting impression materials is crucial for infection control.
Purpose of the Study:
- To evaluate the antimicrobial efficacy of alginate modified with povidone-iodine and silver nanoparticles.
- To assess the mechanical properties (elastic recovery, surface detail reproduction) of these experimental alginate materials.
- To determine if antimicrobial agents compromise the physical integrity of alginate.
Main Methods:
- Three groups of alginate were prepared: control (no additive), povidone-iodine, and silver nanoparticle-containing.
- Antimicrobial activity was tested using the disc diffusion method against Staphylococcus aureus, Escherichia coli, and Candida albicans.
- Mechanical properties, including elastic recovery and surface detail reproduction (50 μm line), were assessed according to ISO 1563:1990.
Main Results:
- Experimental alginates demonstrated broad-spectrum antimicrobial activity against all tested microorganisms compared to the control.
- No statistically significant differences in elastic recovery were found between the control and antimicrobial groups.
- All alginate samples successfully reproduced the 50 μm line, indicating excellent surface detail reproduction.
Conclusions:
- Povidone-iodine and silver nanoparticles can be effectively incorporated into alginate materials for self-disinfection.
- These antimicrobial agents do not adversely affect the critical mechanical properties of alginate, such as detail accuracy and elastic recovery.
- Antimicrobial alginate preparations offer a promising solution for enhancing infection control in dental impression procedures.
