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Related Experiment Video

Updated: Jun 4, 2026

Oral Biofilm Formation on Different Materials for Dental Implants

Oral Biofilm Formation on Different Materials for Dental Implants

Published on: June 24, 2018

Prophylactic agents and bacterial adherence to titanium.

Renata Nunes Barros¹, Cresus Vinícius Depes de Gouvêa

¹Dental Prosthetic Department, Fluminense Federal University, Niterói, Rio de Janeiro, Brazil. re.nunesb@gmail.com

Clinical Oral Implants Research

|February 12, 2011

Summary

Fluoride in dental products can reduce titanium surface roughness, decreasing Streptococcus mutans adherence. Surface topography significantly influences fluoride

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Area of Science:

Biomaterials Science
Dental Materials
Surface Chemistry

Background:

Commercially pure titanium (cpTi) and Ti6Al4V alloy are widely used in dental implants.
Surface properties of titanium-based materials can influence bacterial adhesion and implant success.
Fluoride and prophylactic abrasion are common in oral hygiene practices.

Purpose of the Study:

To evaluate surface alterations of cpTi and Ti6Al4V alloy induced by fluoride (1500 ppm) and bicarbonate abrasion.
To assess the impact of these treatments on Streptococcus mutans adherence.

Main Methods:

Disk-shaped specimens of cpTi and Ti6Al4V were divided into four groups: artificial saliva, fluoridated artificial saliva, bicarbonate abrasion, and bicarbonate abrasion followed by fluoridated saliva.
Surface roughness (Ra) was measured using a profilometer before and after treatments.
Streptococcus mutans adherence was evaluated on the treated specimens.

Main Results:

Fluoride significantly reduced surface roughness in cpTi (G1, G4) and Ti6Al4V (G1, G2, G4).
Bicarbonate abrasion (G3) did not significantly alter surface roughness for either material.
Lower Streptococcus mutans adherence was observed on specimens stored in fluoridated saliva, correlating with surface homogenization.

Conclusions:

Fluoride promotes surface homogenization of titanium and Ti6Al4V alloy at concentrations found in dental products.
Surface topography, specifically roughness, plays a crucial role in bacterial adherence and the efficacy of fluoride.
The findings suggest that fluoride's antimicrobial effect is linked to its ability to modify surface topography.