1. Photoacoustic removal of Enterococcus faecalis biofilms from titanium surface with an Er:YAG laser using super short pulses
- Author
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Michaela Hympanova, Franja Pajk, Iztok Dogsa, Saša Terlep, and David Stopar
- Subjects
Materials science ,Surface Properties ,medicine.medical_treatment ,chemistry.chemical_element ,Lasers, Solid-State ,Dermatology ,Enterococcus faecalis ,030207 dermatology & venereal diseases ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,medicine ,Dental implant ,Hydrogen peroxide ,Dental Implants ,Titanium ,biology ,Chlorhexidine ,Biofilm ,food and beverages ,030206 dentistry ,biochemical phenomena, metabolism, and nutrition ,equipment and supplies ,biology.organism_classification ,chemistry ,Biofilms ,Surgery ,Implant ,Er:YAG laser ,Biomedical engineering ,medicine.drug - Abstract
Biofilms that grow on implant surfaces pose a great risk and challenge for the dental implant survival. In this work, we have applied Er:YAG photoacoustic irrigation using super short pulses (Er:YAG-SSP) to remove biofilms from the titanium surfaces in the non-contact mode. Mature Enterococcus faecalis biofilms were treated with saline solution, chlorhexidine, and hydrogen peroxide, or photoacoustically with Er:YAG-SSP for 10 or 60 s. The number of total and viable bacteria as well as biofilm surface coverage was determined prior and after different treatments. Er:YAG-SSP photoacoustic treatment significantly increases the biofilm removal rate compared to saline or chemically treated biofilms. Up to 92% of biofilm-covered surface can be cleaned in non-contact mode during 10 s without the use of abrasives or chemicals. In addition, Er:YAG-SSP photoacoustic irrigation significantly decreases the number of viable bacteria that remained on the titanium surface. Within the limitations of the present in vitro model, the ER:YAG-SSP seems to constitute an efficient therapeutic option for quick debridement and decontamination of titanium implants without using abrasives or chemicals.
- Published
- 2021
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