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Updated: Sep 15, 2025
11:19
Oral Biofilm Formation on Different Materials for Dental Implants
Published on: June 24, 2018
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Study on the Antimicrobial Properties of Surface-Modified Dental Implants
Jeeth Rai1, Anju N Kilari2, Himanshi Sachdev2
1Department of Periodontology, Bharati Vidyapeeth (Deemed to be University) Dental College and Hospital, Sangli, Maharashtra, India.
Journal of Pharmacy & Bioallied Sciences
|July 14, 2025
Summary
Silver nanoparticle-coated dental implants show superior antimicrobial activity against oral pathogens compared to unmodified or zinc oxide-coated implants. This surface modification offers a promising strategy to combat peri-implantitis and enhance dental implant success rates.
Area of Science:
- Biomaterials Science
- Dental Implantology
- Nanotechnology
Background:
- Peri-implantitis, a significant challenge in restorative dentistry, arises from bacterial colonization on dental implants.
- Surface modification of implants presents a promising strategy to impart antimicrobial properties and improve long-term outcomes.
- This study investigates the antimicrobial efficacy of surface-modified dental implants against common oral pathogens.
Purpose of the Study:
- To evaluate and compare the antimicrobial efficacy of unmodified titanium dental implants, silver nanoparticle-coated implants, and zinc oxide nanoparticle-coated implants.
- To assess the effectiveness of these surface modifications against key oral pathogens, Streptococcus mutans and Porphyromonas gingivalis.
Main Methods:
- Thirty dental implants were divided into three groups: unmodified (Group A), silver nanoparticle-coated (Group B), and zinc oxide nanoparticle-coated (Group C).
- Antimicrobial activity was assessed using agar diffusion tests and colony-forming unit (CFU) counts after 48 hours of incubation.
- Statistical analysis was performed using ANOVA with a significance level of P < 0.05.
Main Results:
- Silver nanoparticle-coated implants (Group B) demonstrated significantly higher antimicrobial activity against both S. mutans and P. gingivalis, with larger inhibition zones and greater CFU reduction compared to Groups A and C (P < 0.05).
- Zinc oxide nanoparticle-coated implants (Group C) exhibited moderate antimicrobial activity, outperforming unmodified implants (Group A).
- Unmodified implants (Group A) showed minimal antimicrobial effects.
Conclusions:
- Surface modification of dental implants, particularly with silver nanoparticles, significantly enhances their antimicrobial properties.
- Antimicrobial coatings represent a viable strategy for reducing peri-implantitis and improving the success rates of dental implants.
- Further in vivo investigations are warranted to confirm these findings in clinical settings.
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