Laser/LED phototherapy on the repair of tibial fracture treated with wire osteosynthesis evaluated by Raman spectroscopy.

Autor: Pinheiro ALB; Center of Biophotonics, School of Dentistry, Federal University of Bahia - UFBA, Av. Araújo Pinho, 62, Canela, Salvador, BA, 40110-150, Brazil.; National Institute of Basic Optics and Applied to Life Sciences, Physics Institute of São Carlos, University of São Paulo - USP, Av. Trabalhador São-Carlense, 400, Parque Arnold Schimidt, São Carlos, SP, 13566-590, Brazil., Soares LGP; Center of Biophotonics, School of Dentistry, Federal University of Bahia - UFBA, Av. Araújo Pinho, 62, Canela, Salvador, BA, 40110-150, Brazil.; National Institute of Basic Optics and Applied to Life Sciences, Physics Institute of São Carlos, University of São Paulo - USP, Av. Trabalhador São-Carlense, 400, Parque Arnold Schimidt, São Carlos, SP, 13566-590, Brazil., da Silva ACP; Center of Biophotonics, School of Dentistry, Federal University of Bahia - UFBA, Av. Araújo Pinho, 62, Canela, Salvador, BA, 40110-150, Brazil., Santos NRS; Center of Biophotonics, School of Dentistry, Federal University of Bahia - UFBA, Av. Araújo Pinho, 62, Canela, Salvador, BA, 40110-150, Brazil., da Silva APLT; Center of Biophotonics, School of Dentistry, Federal University of Bahia - UFBA, Av. Araújo Pinho, 62, Canela, Salvador, BA, 40110-150, Brazil., Neves BLRC; Center of Biophotonics, School of Dentistry, Federal University of Bahia - UFBA, Av. Araújo Pinho, 62, Canela, Salvador, BA, 40110-150, Brazil., Soares AP; Center of Biophotonics, School of Dentistry, Federal University of Bahia - UFBA, Av. Araújo Pinho, 62, Canela, Salvador, BA, 40110-150, Brazil., Silveira L Jr; Center for Innovation, Technology and Education - CITE, Universidade Anhembi Morumbi - UAM, Parque Tecnológico de São José dos Campos, Estr. Dr. Altino Bondensan, 500, Eugênio de Melo, São José dos Campos, SP, 12247-016, Brazil. landulfo.silveira@gmail.com.
Jazyk: angličtina
Zdroj: Lasers in medical science [Lasers Med Sci] 2018 Nov; Vol. 33 (8), pp. 1657-1666. Date of Electronic Publication: 2018 Apr 23.
DOI: 10.1007/s10103-018-2508-7
Abstrakt: The aim of the present study was to assess, by means of Raman spectroscopy, the repair of complete surgical tibial fractures fixed with wire osteosynthesis (WO) treated or not with infrared laser (λ780 nm) or infrared light emitting diode (LED) (λ850 ± 10 nm) lights, 142.8 J/cm 2 per treatment, associated or not to the use of mineral trioxide aggregate (MTA) cement. Surgical tibial fractures were created on 18 rabbits, and all fractures were fixed with WO and some groups were grafted with MTA. Irradiated groups received lights at every other day during 15 days, and all animals were sacrificed after 30 days, being the tibia removed. The results showed that only irradiation with either laser or LED influenced the peaks of phosphate hydroxyapatite (~ 960 cm -1 ). Collagen (~ 1450 cm -1 ) and carbonated hydroxyapatite (~ 1070 cm -1 ) peaks were influenced by both the use of MTA and the irradiation with either laser or LED. It is concluded that the use of either laser or LED phototherapy associated to MTA cement was efficacious on improving the repair of complete tibial fractures treated with wire osteosynthesis by increasing the synthesis of collagen matrix and creating a scaffold of calcium carbonate (carbonated hydroxyapatite-like) and the subsequent deposition of phosphate hydroxyapatite.
Databáze: MEDLINE
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