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Oral Biofilm Formation on Different Materials for Dental Implants

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Published on: June 24, 2018

Micro-organism and cell viability on antimicrobially modified titanium.

S Omori¹, Y Shibata, T Arimoto

¹Department of Prosthodontics, Showa University School of Dentistry, 2-1-2, Kitasenzoku, Ohta-ku, Tokyo 145-8515, Japan.

Journal of Dental Research

|September 29, 2009

Summary

Antimicrobial titanium, created via anodization, effectively kills bacteria through peroxidation. Osteoblastic cells remain viable due to their indirect adhesion, highlighting differential cell adhesion mechanisms for improved biomaterial design.

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Antimicrobial Characterization of Advanced Materials for Bioengineering Applications

Antimicrobial Characterization of Advanced Materials for Bioengineering Applications

Published on: August 4, 2018

Area of Science:

Biomaterials Science
Surface Chemistry
Microbiology

Background:

Anodized titanium in NaCl solution exhibits both antimicrobial and osteoconductive properties.
The survival of microorganisms and cells on antimicrobial titanium surfaces requires further investigation.

Purpose of the Study:

To investigate the viability of adherent microorganisms and osteoblastic cells on antimicrobial titanium.
To elucidate the mechanism of antimicrobial activity and its effect on cell viability.

Main Methods:

Titanium anodization in NaCl solution.
Detection of peroxidation products.
Assessment of bacterial and osteoblastic cell viability.
Evaluation of serum protein influence on cell adhesion.

Main Results:

Antimicrobial titanium efficacy is linked to peroxidation, evidenced by detected peroxidation products and damaged bacterial structures.
Osteoblastic cell viability is serum protein-dependent, while Streptococcus mutans viability is unaffected by serum proteins.
The peroxidation effect is localized to the titanium surface.

Conclusions:

A thin peroxidation barrier on titanium effectively eliminates bacteria.
Osteoblastic cells survive on antimicrobial titanium due to indirect adhesion via serum proteins.
Differential adhesion mechanisms dictate cell and bacterial viability on antimicrobial titanium surfaces.