IADR Abstract Archives

Relationship Between Er:YAG Laser Irradiation and Vibrio harveyi Quorum Sensing

Objective: Laser technologies have many different applications in medicine and more recently, in dentistry. Several studies have shown the effects of laser irradiation on oral bacteria. One of the unique features of bacteria which were reported lately is their ability to communicate amongst themselves (quorum sensing). We tested if laser irradiation, at sub-lethal concentrations, may affect bacteria also by affecting this cross communication process.

Method: The effect of Er:YAG (2940 nm wavelength; Syneron, Yokneam, Israel) laser irradiation at 0.5, 1.5, and 4 watts on quorum sensing was determined on wild-type Vibrio harveyi and on three additional strains of the bacteria mutated at different locations along the quorum-sensing cascade.

Result: Following irradiation of bacteria, dose/output-power-dependent differences were found in the bioluminescence omitted from each of the tested strain. The highest effect was recorded with the lowest output settings, and the lowest effect was recorded with the strongest energy output.

Conclusion: Results suggest on a possible effect of laser irradiation on bacteria via an effect on their quorum-sensing cascade.

Division: Pan European Region Meeting
Meeting: 2014 Pan European Region Meeting (Dubrovnik, Croatia)
Location: Dubrovnik, Croatia
Year: 2014
Final Presentation ID: 412
Abstract Category|Abstract Category(s): Scientific Groups

Authors

Redenski, Idan ( The Hebrew University-Hadassah School of Dental Medicine, Jerusalem, , Israel )

Sahar-helft, Sharonit ( The Hebrew University-Hadassah School of Dental Medicine, Jerusalem, , Israel )

Stabholz, Adam ( The Hebrew University-Hadassah School of Dental Medicine, Jerusalem, , Israel )

Aharoni, Reuven ( Hebrew University, Jerusalem, , Israel )

Steinberg, Doron ( Hebrew University, Jerusalem, , Israel )

SESSION INFORMATION

Poster Session
Microbiology/Immunology IV
09/12/2014