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Publication:
Journal of Oral Laser Applications

Year 2002
Volume 2 , Issue 3

Back
Pages: 171 - 174

Bactericidal Efficacy of CO2 Laser Against Bacterially Contaminated Sandblasted Titanium Implants

George E. Romanos/Peter Purucker/Jean-Pierre Bernimoulin/Georg-Hubertus Nentwig

Purpose: Bacterial contamination of implant surfaces is a very common reason for implant loss. The modern clinical treatment approaches have not been thoroughly researched and sometimes do not lead to successful results. As in periodontal lesions, Porphyromonas gingivalis is the main periimplant pathogenic microorganism and can be detected in high amounts. The aim of this study was to examine the bactericidal efficacy of the CO2 laser against bacterially contaminated, sandblasted implant surfaces. Materials and Methods: Forty titanium implants covered with Porphyromonas gingivalis were exposed to aerobic conditions for 5 min. After randomization, twenty implants were irradiated for 60 s with the cw-CO2 laser at 2 W power output (distance between handpiece and implant was 20 mm and the implants were rotated 6.5 times on the implant axis). Immediately after laser irradiation, the bacterial layer was removed and cultivated on Schaedler agar plates. Results: Significantly different growth rates for P. gingivalis were found between irradiated and nonirradiated implants (p < 0.05) after 5 days of cultivation; the numbers of these bacteria were reduced using the laser parameters described here. Conclusion: Under clinically suitable conditions, the cw-CO2 laser may support the bacterial decontamination of titanium implant surfaces.

 

 
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