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The Role of Low-Level Laser Therapy in Bone Healing: Systematic Review

Abstract

Low-level laser therapy (LLLT) is a treatment that is increasingly used in orthopedics practices. In vivo and in vitro studies have shown that low-level laser therapy (LLLT) promotes angiogenesis, fracture healing and osteogenic differentiation of stem cells. However, the underlying mechanisms during bone formation remain largely unknown. Factors such as wavelength, energy density, irradiation and frequency of LLLT can influence the cellular mechanisms. Moreover, the effects of LLLT are different according to cell types treated. This review aims to summarize the current knowledge of the molecular pathways activated by LLLT and its effects on the bone healing process. A better understanding of the cellular mechanisms activated by LLLT can improve its clinical application.

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References
1.
Wu J, Chen C, Wang C, Ho M, Yeh M, Wang Y . Low-power laser irradiation suppresses inflammatory response of human adipose-derived stem cells by modulating intracellular cyclic AMP level and NF-κB activity. PLoS One. 2013; 8(1):e54067. PMC: 3546978. DOI: 10.1371/journal.pone.0054067. View

2.
Schett G . Effects of inflammatory and anti-inflammatory cytokines on the bone. Eur J Clin Invest. 2011; 41(12):1361-6. DOI: 10.1111/j.1365-2362.2011.02545.x. View

3.
Kenji Nampo F, Cavalheri V, DE Paula Ramos S, Camargo E . Effect of low-level phototherapy on delayed onset muscle soreness: a systematic review and meta-analysis. Lasers Med Sci. 2015; 31(1):165-77. DOI: 10.1007/s10103-015-1832-4. View

4.
Hanna R, Pawelczyk-Madalinska M, Salagean T, Nap M, Bordea I, Benedicenti S . A Novel Concept of Combined High-Level-Laser Treatment and Transcutaneous Photobiomodulation Therapy Utilisation in Orthodontic Periodontal Interface Management. Sensors (Basel). 2022; 22(6). PMC: 8951072. DOI: 10.3390/s22062263. View

5.
Cardoso M, do Vale Placa R, Santana A, Greghi S, Zangrando M, de Rezende M . Laser and LED photobiomodulation effects in osteogenic or regular medium on rat calvaria osteoblasts obtained by newly forming bone technique. Lasers Med Sci. 2020; 36(3):541-553. DOI: 10.1007/s10103-020-03056-5. View