@article{AghaEbrahimi_Sabaghzadeh_Soudi_Ahari_2024, title={Photodynamic Activation using Herbal Extract and Low-Power Laser against Gram-Positive (Streptococcus mutans) and Gram-Negative (Klebsiella pneumoniae) Bacteria: Threats and Resistance Mechanisms}, volume={18}, url={https://oiccpress.com/journal-of-theoretical-and-applied-physics/article/photodynamic-activation-using-herbal-extract-and-low-power-laser-against-gram-positive-streptococcus-mutans-and-gram-negative-klebsiella-pneumoniae-bacteria-threats-and-resistance-mechanisms/}, DOI={10.57647/j.jtap.2024.1804.46}, abstractNote={  This paper investigates the efficacy of photodynamic activation (PDA) using herbal extract in combination with low-power laser treatment against both Gram-positive (Streptococcus mutans) and Gram-negative (Klebsiella pneumoniae) bacteria. The study explores the threats posed by these bacteria and highlights their resistance mechanisms. Various experiments, including colony formation assays, minimal inhibitory concentration tests, and bacterial viability assays, were conducted to assess the antibacterial effects of PDA in the presence and absence of laser irradiation. Additionally, spectroscopic analysis of the herbal extract was performed to elucidate their composition and potential synergistic interactions with PDA. }, number={4}, journal={Journal of Theoretical and Applied Physics}, publisher={OICC Press}, author={AghaEbrahimi, Zahra and Sabaghzadeh, Jamshid and Soudi, Sasan and Ahari, MohamadReza Tanhayi}, year={2024}, month={Aug.}, keywords={Antibacterial effects, Resistance mechanisms, Photodynamic activation, Herbal extract, Low-power laser} }