20.500.12556/DiRROS-28975 Er:YAG laser biofilm removal from zero-gap periodontal/peri-implant model system mimicking clinical attachment loss Significance: Here, we present a photoacoustic method to remove biofilms from periodontal and peri-implant-constrained geometries. Aim: We aim to remove biofilms from narrow periodontal and peri-implant model systems with the application of Er:YAG ultrashort laser pulses. Approach: Construction of zero-gap model system from PDMS and titanium, growth of biofilms on titanium surfaces, and removal of biofilms with Er:YAG USP, 20 mJ, 15 Hz, and 10 s were performed. Results: The results suggest that geometry, the vertical position of the laser fiber tip, and the evolution of the primary cavitation bubble significantly affect cleaning effectiveness. Cleaning was higher in the wedge part of the model system. In the zero-gap part of the model system, biofilm cleaning effectiveness was highest at the position of the laser fiber tip and decreased above and below the fiber tip. The dimension of the space in which the cavitation bubble develops determines the size and dynamics of the expanded cavitation bubble and consequently the biofilm cleaning effectiveness. Conclusions: The obtained results suggest a very good biofilm removal effectiveness in difficult-to-reach narrow geometries mimicking clinical attachment loss in the periodontal/peri-implant pocket. Er:YAG laser photoacoustic removal biofilm attachment loss in vitro model biofilm lasersko čiščenje fotoakustično odstranjevanje biofilmov obzobni žepki true false true Angleški jezik Slovenski jezik Neznano 2026-04-15 12:55:13 2026-04-15 12:55:14 2026-04-16 04:06:21 0000-00-00 00:00:00 2025 0 0 str. 025002-1-025002-11 issue 2 Vol. 30 Feb. 2025 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 0000-00-00 579.61:544.537 1083-3668 10.1117/1.JBO.30.2.025002 228534787 RAZ_Volk_Marko_2025.pdf RAZ_Volk_Marko_2025.pdf 1 EFCAE34F0EE60C8E842159D277B7CCE8 6db3c01f6fae78e8013d851469ff1e266b85aee74ddbbf39167e71aa7292640c cb273cfd-38b9-11f1-9cc3-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=43240 https://www.spiedigitallibrary.org/journals/journal-of-biomedical-optics/volume-30/issue-02/025002/Er-YAG-laser-biofilm-removal-from-zero-gap-periodontal-peri/10.1117/1.JBO.30.2.025002.full 1 97b7f97e-38b9-11f1-9cc3-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=43239 Univerzitetni klinični center Ljubljana 0 0 0