Photobiomodulation Therapy in Bone Repair Associated with Bone Morphogenetic Proteins and Guided Bone Regeneration: A Histomorphometric Study.
Photomed Laser Surg
; 36(11): 581-588, 2018 Nov.
Article
em En
| MEDLINE
| ID: mdl-30422755
ABSTRACT
OBJECTIVE:
To evaluate the efficacy of photobiomodulation for bone repair of critical surgical wounds with implants of bone morphogenetic proteins (BMPs) and bovine biological membranes, using histological and histomorphometric analysis.BACKGROUND:
Tissue engineering has been developing rapidly through the use of various biomaterials for the treatment of bone defects, such as mechanical barriers consisting of biological membranes and implants of biomaterials for bone supply. MATERIALS ANDMETHODS:
Thirty-two male rats were divided into four groups (n = 8) group I-C control; group II-PT photobiomodulation therapy; group III-PM Gen-Pro® BMPs+Gen-Derm® membrane; and group IV-PMPT Gen-Pro® BMPs+Gen-Derm® membrane+photobiomodulation therapy. A 3 mm bone cavity was performed in the upper third of the lateral surface of the right rat femur to obtain a bone defect considered to be critical. The irradiated groups received seven applications of AlGaAs diode laser 830 nm, P = 40 mW, continuous wave (CW) emission mode, f â¼ 0.6 mm, 4 J/cm2 per point (north, south, east, and west) at 48 h intervals, for a total of 16 J/cm2 per session (final dose 112 J/cm2). Bone repair was evaluated at sacrifice 15 and 30 days after the procedure. The specimens were embedded in paraffin and stained with hematoxylin and eosin and Picrosirius for analysis by light microscopy and by the Leica interactive measurement module software. Statistical analysis was performed (p < 0.05%).RESULTS:
Histological analysis confirmed the histomorphometric results, with the experimental groups showing bone neoformation of significantly higher quality and quantity at the end of 30 days compared with the control group.CONCLUSIONS:
Photobiomodulation therapy was effective for bone repair mainly when associated with BMPs and a biological membrane. The results of this study are promising and stimulate further scientific and clinical research.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Regeneração Óssea
/
Proteínas Morfogenéticas Ósseas
/
Terapia com Luz de Baixa Intensidade
/
Regeneração Tecidual Guiada
Tipo de estudo:
Risk_factors_studies
Limite:
Animals
Idioma:
En
Revista:
Photomed Laser Surg
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Brasil