3 July 2003 Assessment of bone repair following the use of anorganic bone graft and membrane associated or not to 830-nm laser light
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Proceedings Volume 4950, Lasers in Dentistry IX; (2003) https://doi.org/10.1117/12.472878
Event: Biomedical Optics, 2003, San Jose, CA, United States
Abstract
The aim of this study was to assess the effect of LLLT (λ830nm, Thera lase, DMC Equipmentos, Sao Carlos, SP, Brazil, 40mW, CW, spot size 0.60mm, 16J/cm2 per session) on the repair of bone defects on the femur of Wistar albinus rats which were grafted with anorganic bovine bone associated or not to bovine bone membrane. Five randomized groups were studied: I (Control); II (anorganic bovine bone); III (anorganic bovine bone + LLLT); IV (anorganic bovine bone + bovine bone membrane) and V (anorganic bovine bone + bovine bone membrane + LLLT). The animals were irradiated at every 48h during 15 days, the first irradiation was performed immediately after the procedure. The animals were irradiated transcutaneuosly in four points around the defect. At each point a dose of 4J/cm2 was given (f~0,60mm, 40mW) totaling 16J/cm2 per session. The animals were sacrificed 15, 21 and 30 days after surgery. The specimens were routinely processed to wax and stained with H&E and Picrosírius stains and analyzed under light microscopy. The results showed evidence of a more advanced repair on the irradiated groups when compared to non-irradiated ones. The repair of irradiated groups was characterized by both increased bone formation and amount of collagen fibers around the graft within the cavity early, considering the osteoconductive capacity of the anorganic bovine bone and the increment of the cortical repair in specimens with membrane. It is concluded that LLLT had a positive effect on the repair of bone defect submitted the implantation of graft associated or not to the use of biological membrane.
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Francisco de Assis Limeira, Francisco de Assis Limeira, Antônio Luiz Barbosa Pinheiro, Antônio Luiz Barbosa Pinheiro, Marleny Elizabeth Marquez de Martinez Gerbi, Marleny Elizabeth Marquez de Martinez Gerbi, Luciana Maria Pedreira Ramalho, Luciana Maria Pedreira Ramalho, Clovis Marzola, Clovis Marzola, Elizabeth Arruda Carneiro Ponzi, Elizabeth Arruda Carneiro Ponzi, Andre Olveira Soares, Andre Olveira Soares, Lívia Cristina Bandeira de Carvalho, Lívia Cristina Bandeira de Carvalho, Helena Cristina Vieira Lima, Helena Cristina Vieira Lima, Thais Oliveira Gonçalves, Thais Oliveira Gonçalves, Gyselle Cyntia Silva Meireles, Gyselle Cyntia Silva Meireles, Thaise R. Possa, Thaise R. Possa, } "Assessment of bone repair following the use of anorganic bone graft and membrane associated or not to 830-nm laser light", Proc. SPIE 4950, Lasers in Dentistry IX, (3 July 2003); doi: 10.1117/12.472878; https://doi.org/10.1117/12.472878
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