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Valiati R, Paes JV, de Moraes AN, et al. Effect of low-level laser therapy on incorporation of block allografts. Int J Med Sci. 2012;9(10):853-61doi: 10.7150/ijms.4440.
Valiati, R., Paes, J. V., de Moraes, A. N., Gava, A., Agostini, M., Masiero, A. V., de Oliveira, M. G., & Pagnoncelli, R. M. (2012). Effect of low-level laser therapy on incorporation of block allografts. International journal of medical sciences, 9(10), 853-61. https://doi.org/10.7150/ijms.4440
Valiati, Renato, et al. "Effect of low-level laser therapy on incorporation of block allografts." International journal of medical sciences vol. 9,10 (2012): 853-61. doi: https://doi.org/10.7150/ijms.4440
Valiati R, Paes JV, de Moraes AN, Gava A, Agostini M, Masiero AV, de Oliveira MG, Pagnoncelli RM. Effect of low-level laser therapy on incorporation of block allografts. Int J Med Sci. 2012;9(10):853-61. doi: 10.7150/ijms.4440. Epub 2012 Nov 05. PMID: 23155359; PMCID: PMC3498750.
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Int J Med Sci. 2012;9(10):853-61. doi: 10.7150/ijms.4440. Epub 2012 Nov 05.

Effect of low-level laser therapy on incorporation of block allografts.

International journal of medical sciences

Renato Valiati, Jefferson Viapiana Paes, Aury Nunes de Moraes, Aldo Gava, Michelle Agostini, Anelise Viapiana Masiero, Marilia Gerhardt de Oliveira, Rogério Miranda Pagnoncelli

Affiliations

  1. School of Dentistry, Universidade do Planalto Catarinense, Lages, Brazil. [email protected]

PMID: 23155359 PMCID: PMC3498750 DOI: 10.7150/ijms.4440

Abstract

OBJECTIVE: To assess the effect of low-level laser therapy (LLLT) on the incorporation of deep-frozen block allografts in a rabbit model.

BACKGROUND DATA: Studies have shown that LLLT has beneficial effects on tissue repair and new bone formation.

METHODS: Bone tissue was harvested from two rabbits, processed by deep-freezing and grafted into the calvaria of 12 animals, which were then randomly allocated into two groups: experimental (L) and control (C). Rabbits in group L were irradiated with an aluminum gallium arsenide diode laser (AlGaAs; wavelength 830 nm, 4 J/cm(2)), applied to four sites on the calvaria, for a total dose of 16 J/cm(2) per session. The total treatment dose after eight sessions was 128 J/cm(2). Animals were euthanized at 35 (n = 6) or 70 days (n = 6) postoperatively.

RESULTS: Deep-freeze-processed block allografts followed by LLLT showed incorporation at the graft-host interface, moderate bone remodeling, partial filling of osteocyte lacunae, less inflammatory infiltrate in the early postoperative period, and higher collagen deposition than the control group.

CONCLUSION: Optical microscopy and scanning electron microscopy showed that allograft bone processed by deep-freezing plus LLLT is suitable as an alternative for the treatment of bone defects. Use of the deep-freezing method for processing of bone grafts preserves the structural and osteoconductive characteristics of bone tissue.

Keywords: Bone healing; Diode/diode laser; Effect of lasers in tissue; Low-level laser therapy.

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