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Antimicrobial efficacy of erbium laser in the endodontic treatment of infected root canals

Er:YAG laser appeared to be effective in enhancing the efficacy of irrigation solutions that are commonly used in endodontics. All methods successfully killed microbial cells forming biofilms in the infected root canals, but none of them achieved 100% elimination. Longer duration of laser radiation allows better disinfection, since 90-second radiation showed an average above 80% removal of the microorganisms, while 30-second only above 70%. Combination of two methods, respectively irrigation and radiation with laser for 90 seconds was effective in eradicating 90-95% of microbial biofilms. The combined use of different methods is therefore necessary to enhance antimicrobial effectiveness. Additional clinical studies are needed to clarify the effect on endodontic treatment outcomes in vivo.

root canals, disinfection, Er:YAG, laser, endodontic procedures

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