Ehsan Birang
Shahid Beheshti University School of Dentistry, Tehran
Title: Investigation of the antibacterial effect of laser irradiation and hemical agent on human oral biofilms contaminated titanium discs
Biography
Biography: Ehsan Birang
Abstract
A main challenge in treatment of peri-implant disease is the effective decontamination of the
Implant surface.
This challenge has always been a problem,associated with the treatment of these diseases with regard to the difficulty in removing and eliminating bacterial biofilm from the surface of dental implants, especially rough surfaces.The aim of this invivo study was to evaluate the effect of five different antimicrobial methods in reducing bacteria adhering to titanium surfaces.In the present invivo study, the contaminated discs, except for the negative control group,randomly under went one of five treatments:Erbium:YattriumAluminumGarnet(Er-YAG)laser,plastic curette,0.12%chlorhexidine,aPDT,and810nm diode laser.A pectrophotometer was used to measure Optical Density(OD) in case of aerobic microorganisms.Colony Forming Units(CFUs) were used for an aerobic bacteria. Then,all the analyses were carried out at a significance level of α=0.05 through SPSS software. One-way analysis of variance (ANOVA) of aerobic bacteria showed a significant difference among 6 groups in terms of OD variations during a 0–24h time interval (P < 0.001).The results of Kruskal-Wallis test were used to investigate the effect of study methods on anaerobic bacteria after 48h,and the results showed a significant difference among 6 groups interms of CFUs(P < 0.001). The results of the present study showed that all five mechanicals(plasticcurette),chemical(CHX), laser (810nm diode and Er: YAG), and aPDT methods could reduce oral biofilms from roughed surfaces of titanium discs.Er:YAGlaserand plastic curette had thehighest and the lowest effects respectively.