21 April 2016 Pilot in vivo animal study of bone regeneration by fractional Er: YAG-laser
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Abstract
The histological structure of the rabbit parietal bone during its regeneration after fractional Er: YAG-laser (λ=2.94μm) treatment was investigated by hematoxylin and eosin (H&E) stain. In 48 days after fractional laser treatment, bone samples contained micro-cavities and fragments of necrotic tissue with empty cellular lacuna and coagulated protein of bone matrix. In this case, necrotic lesions appeared around the periphery of micro-cavities created by laser radiation. Fragmentation of detrital mass and partial substitution of micro-cavities with fatty bone marrow were observed in bone samples in 100 days after fractional laser treatment, in contrast to the earlier period. Partial filling of micro-cavities edges by fibrous tissue with presence of osteoblasts on their inner surface was observed in 100 days also, that indicates regenerative processes in the bone.
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Gregory B. Altshuler, Andrey V. Belikov, Ksenia V. Shatilova, Andrey I. Yaremenko, Alexander Y. Zernitskiy, Ekaterina A. Zernitckaia, "Pilot in vivo animal study of bone regeneration by fractional Er: YAG-laser", Proc. SPIE 9917, Saratov Fall Meeting 2015: Third International Symposium on Optics and Biophotonics and Seventh Finnish-Russian Photonics and Laser Symposium (PALS), 991702 (21 April 2016); doi: 10.1117/12.2229391; https://doi.org/10.1117/12.2229391
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