Attachment of Porphyromonas gingivalis to Corroded Commercially Pure Titanium and Titanium‐Aluminum‐Vanadium Alloy

Background: Titanium dental material can become corroded because of electrochemical interaction in the oral environment. The corrosion process may result in surface modification. It was hypothesized that a titanium surface modified by corrosion may enhance the attachment of periodontal pathogens. Th...

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Bibliographic Details
Published in:Journal of periodontology (1970) 2014-09, Vol.85 (9), p.1275-1282
Main Authors: Barão, Valentim A.R., Yoon, Cheon Joo, Mathew, Mathew T., Yuan, Judy Chia‐Chun, Wu, Christine D., Sukotjo, Cortino
Format: Article
Language:English
Subjects:
Anaerobiosis
Attachment sites, microbiological
Bacterial Adhesion - physiology
Biofilms
Coloring Agents
Corrosion
Dental Alloys - chemistry
dental implants
Dental Materials - chemistry
Dentistry
Electrochemical Techniques
Gentian Violet
Humans
Hydrogen-Ion Concentration
Materials Testing
Microscopy, Interference
peri‐implantitis
Porphyromonas gingivalis
Porphyromonas gingivalis - physiology
Saliva, Artificial - chemistry
Surface Properties
Temperature
Time Factors
titanium
Titanium - chemistry
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Summary:Background: Titanium dental material can become corroded because of electrochemical interaction in the oral environment. The corrosion process may result in surface modification. It was hypothesized that a titanium surface modified by corrosion may enhance the attachment of periodontal pathogens. This study evaluates the effects of corroded titanium surfaces on the attachment of Porphyromonas gingivalis. Methods: Commercially pure titanium (cp‐Ti) and titanium‐aluminum‐vanadium alloy (Ti‐6Al‐4V) disks were used. Disks were anodically polarized in a standard three‐electrode setting in a simulated oral environment with artificial saliva at pH levels of 3.0, 6.5, or 9.0. Non‐corroded disks were used as controls. Surface roughness was measured before and after corrosion. Disks were inoculated with P. gingivalis and incubated anaerobically at 37°C. After 6 hours, the disks with attached P. gingivalis were stained with crystal violet, and attachment was expressed based on dye absorption at optical density of 550 nm. All assays were performed independently three times in triplicate. Data were analyzed by two‐way analysis of variance, the Tukey honestly significant difference test, t test, and Pearson's correlation test (α = 0.05). Results: Both cp‐Ti and Ti‐6Al‐4V alloy‐corroded disks promoted significantly more bacterial attachment (11.02% and 41.78%, respectively; P
ISSN:0022-3492
1943-3670
DOI:10.1902/jop.2014.130595