Investigating the Effect of Photobiomodulation Therapy With Different Wavelengths of Diode Lasers on the Proliferation and Adhesion of Human Gingival Fibroblast Cells to a Collagen Membrane: An In Vitro Study Photobiomodulation effect on gingival fibroblast cell

Journal of Lasers in Medical Sciences, Vol. 15 (2024), 1 Dey 2024 , Page e53
Published: 2024-11-03

Abstract

Introduction: Photobiomodulation (PBM) is considered a promising adjunctive approach in regenerative medicine. This study aimed to investigate the proliferation and adhesion of human gingival fibroblast (HGF) cells to a collagen membrane following PBM.
Methods: Cultured HGF cells on a collagen membrane received PBM at wavelengths of 808 nm, 915 nm (2 and 4 J/cm2), and 660 nm (2.1 and 4.2 J/cm2) in interventional groups, while non-irradiated cells served as the control. On days 1 and 3 post-irradiation, cell proliferation was measured by MTT assay and adhesion to the membrane was assessed under the scanning electron microscope (SEM).
Results: Cell proliferation significantly increased in interventional groups compared to the control, with the most significant increase at 915 nm (4 J/cm2) in both time points. On the first day, the 808 nm and 660 nm lasers demonstrated similar results, significantly lower than the 915 nm laser (2 J/cm²). On day 3, the 660 nm, 808 nm, and 915 nm (2 J/cm²) groups showed comparable results. Qualitative analysis by the SEM identified spindle-shaped cells with multiple extended projections in 915 nm groups, especially at an energy density of 4 J/cm2. Groups of 660 nm and 808 nm (4 J/cm2) showed spindle-shaped cell morphology. No distinct cellular morphology indicative of enhanced adhesion was observed at 808 nm (2 J/cm2).
Conclusion: The most effective PBM setup for promoting HGF proliferation and adhesion to a collagen membrane was identified at 915 nm (4 J/cm2)

Keywords: Fibroblast; Guided tissue regeneration; Low-level light therapy; Photobiomodulation; Periodontal diseases How to Cite

Karimi, M. R., Abdollahi, S., Etemadi, A., & Hakimiha, N. (2024). Investigating the Effect of Photobiomodulation Therapy With Different Wavelengths of Diode Lasers on the Proliferation and Adhesion of Human Gingival Fibroblast Cells to a Collagen Membrane: An In Vitro Study: Photobiomodulation effect on gingival fibroblast cell. Journal of Lasers in Medical Sciences, 15, e53. Retrieved from https://journals.sbmu.ac.ir/jlms/article/view/45620

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