Comparação dos efeitos do laser de baixa potência e do ultrassom de baixa intensidade no processo de reparo ósseo em tíbia de rato

Oliveira, Poliani de; Sperandio, Evandro Fornias; Fernandes, Kelly Rossetti; Pastor, Fabio Alexandre Casarin; Nonaka, Keico Okino; Rennó, Ana Cláudia Muniz

doi:10.1590/s1413-35552011000300005

Cited by 20 publications

(3 citation statements)

References 24 publications

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“…Despite the increasing success of the use of photobiomodulation in different areas, there are relatively few reports on their effect on bone repair that are evidence-based. However, due to the positive effects on bone metabolism, the use of photobiomodulation has been encouraged in clinical practice [39]. Renno et al [40] and Stein et al [29] showed a significant increase in the proliferation of osteoblasts after laser energy irradiation using an 830 nm diode generating 20 J/cm 2 .…”

Section: Discussionmentioning

confidence: 99%

Osteogenic Potential of Bovine Bone Graft in Combination with Laser Photobiomodulation: An Ex Vivo Demonstrative Study in Wistar Rats by Cross-Linked Studies Based on Synchrotron Microtomography and Histology

Luca

Giuliani

Mănescu

et al. 2020

IJMS

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Background: Alveolar bone defects are usually the main concern when planning implant treatments for the appropriate oral rehabilitation of patients. To improve local conditions and achieve implant treatments, there are several methods used for increasing bone volume, among which one of the most successful, versatile, and effective is considered to be guided bone regeneration. The aim of this demonstrative study was to propose an innovative analysis protocol for the evaluation of the effect of photobiomodulation on the bone regeneration process, using rat calvarial defects of 5 mm in diameter, filled with xenograft, covered with collagen membrane, and then exposed to laser radiation. Methods: The animals were sacrificed at different points in time (i.e., after 14, 21, and 30 days). Samples of identical dimensions were harvested in order to compare the results obtained after different periods of healing. The analysis was performed by cross-linking the information obtained using histology and high-resolution synchrotron-based tomography on the same samples. A comparison was made with both the negative control (NC) group (with a bone defect which was left for spontaneous healing), and the positive control (PC) group (in which the bone defects were filled with xenografts and collagen membrane without receiving laser treatment). Results: We demonstrated that using photobiomodulation provides a better healing effect than when receiving only the support of the biomaterial. This effect has been evident for short times treatments, i.e., during the first 14 days after surgery. Conclusion: The proposed analysis protocol was effective in detecting the presence of higher quantities of bone volumes under remodeling after photobiomodulation with respect to the exclusive bone regeneration guided by the xenograft.

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Section: Discussionmentioning

confidence: 99%

Osteogenic Potential of Bovine Bone Graft in Combination with Laser Photobiomodulation: An Ex Vivo Demonstrative Study in Wistar Rats by Cross-Linked Studies Based on Synchrotron Microtomography and Histology

Luca

Giuliani

Mănescu

et al. 2020

IJMS

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“…10 A evolução apresentada nos demais pontos biológicos do GUS 5 pode ter sido motivada pelo prolongamento do estímulo no tecido ósseo, que é capaz de promover regiões de remodelação, 10 sendo considerado um tempo suficiente para promover a consolidação óssea. 18 Entretanto, alguns autores 11,22,23 afirmam que o tempo ideal para promover o estímulo osteogênico e a organização tecidual é a partir de 10 minutos, o que sugere que o ultrassom possui efeito dose-dependente quanto ao tempo de estimulação.…”

Section: Discussionunclassified

“…20,29 Devido a esse mecanismo, o ultrassom é capaz de eliminar o processo inflamatório a partir da fase inicial do reparo. 23 O ultrassom terapêutico, apesar de apresentar efeito osteogênico e possibilitar seu uso em situações em que o reparo é crítico, não mostrou eficácia quanto ao restabelecimento do volume e da morfologia do tecido ósseo original em ambos os protocolos. Dessa forma, a fim de potencializar os efeitos das ondas ultrassônicas, sugere-se uma possível associação desse recurso terapêutico a um arcabouço tridimensional, que servirá de maior suporte estrutural e mecânico, potencializará o crescimento celular e induzirá a diferenciação celular.…”

Section: Discussionunclassified

Análise comparativa do efeito de dois protocolos de ultrassom terapêutico para regeneração de defeito ósseo crítico

Daltro

Barreto

Almeida

et al. 2020

Rev Bras Ortop (Sao Paulo)

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Resumo Objetivo Comparar o efeito de dois protocolos de ultrassom terapêutico com diferentes tempos de exposição para regeneração de defeito ósseo crítico. Métodos Foram utilizados 45 ratos, machos, distribuídos em três grupos: grupo ultrassom terapêutico 5 minutos (GUS 5); grupo ultrassom terapêutico 10 minutos (GUS 10); e grupo controle (GC). Em todos os grupos, confeccionou-se um defeito ósseo crítico, com 8,5 mm de diâmetro, na região da calvária. O protocolo foi iniciado no 1° dia do pós-operatório, no GUS 5 e no GUS 10, com ultrassom terapêutico na frequência de 1,0 MHz, modo pulsado, 5 vezes por semana, nos períodos de 15, 30, e 60 dias. Resultados Dentre os grupos experimentais, houve maior neoformação de matriz osteoide no GUS 10, seguido do GUS 5 quando comparados ao GC, no qual a neoformação foi restrita à região de borda. O uso do ultrassom promoveu aumento na espessura da matriz conjuntiva, proliferação de capilares, alinhamento das fibras colágenas, redução do edema e do processo inflamatório, tendo sido mais significativo no tempo de 10 minutos. Conclusão O ultrassom terapêutico estimulou o reparo do defeito ósseo crítico, e o maior tempo de exposição promoveu maior estímulo osteogênico.

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Overview of non-invasive factors (low level laser and low intensity pulsed ultrasound) accelerating tooth movement during orthodontic treatment

et al. 2012

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The need for orthodontic treatment is increasing all the time. As the treatment is time consuming ranging from a year to several years, any method of reducing the period of treatment and increasing the quality of the tissue will be beneficial to patients. The use of non-invasive techniques such as low level laser therapy and low intensity pulsed ultasound in accelerating orthodontic tooth movement are promising. Thus, this overview study will help to generate more understanding about the background information and the possible applications of them in daily orthodontics, depending on previous literature searching for reviews and original research articles.

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Comparação dos efeitos do laser de baixa potência e do ultrassom de baixa intensidade no processo de reparo ósseo em tíbia de rato

Abstract: Comparison of the effects of low-level laser therapy and low-intensity pulsed ultrasound on the process of bone repair in the rat tibia Comparação dos efeitos do laser de baixa potência e do ultrassom de baixa intensidade no processo de reparo ósseo em tíbia de rato

Cited by 20 publications

References 24 publications

Osteogenic Potential of Bovine Bone Graft in Combination with Laser Photobiomodulation: An Ex Vivo Demonstrative Study in Wistar Rats by Cross-Linked Studies Based on Synchrotron Microtomography and Histology

Osteogenic Potential of Bovine Bone Graft in Combination with Laser Photobiomodulation: An Ex Vivo Demonstrative Study in Wistar Rats by Cross-Linked Studies Based on Synchrotron Microtomography and Histology

Análise comparativa do efeito de dois protocolos de ultrassom terapêutico para regeneração de defeito ósseo crítico

Overview of non-invasive factors (low level laser and low intensity pulsed ultrasound) accelerating tooth movement during orthodontic treatment

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