Evaluation of a collagen matrix in a mandible defect in rats submitted to the use of bisphosphonates
Acta cir. bras
;
35(10): e202001005, 2020. tab, graf
Article
in English
| LILACS
| ID: biblio-1141932
ABSTRACT
Abstract Purpose:
To assess the effect of a collagen matrix (Mucograft®) on the inflammatory process in a semi-critical experimental defect model in rats treated with bisphosphonates.Methods:
Eighteen Wistar rats were randomly divided into three groups saline (CG), alendronate (ALD) 5mg/kg (AG) or zoledronic acid (ZA) 0.2mg/kg (ZG). ALD was administered orally for 10 weeks and ZA was administered intravascularly on days 0, 7 and 14 and 49. On day 42, a 2mm defect was created and filled with Mucograft® collagen matrix. The contralateral side was filled with a clot (control side). The animals were euthanized 70 days after the beginning of the experiment and the hemimandibles were radiographically and histologically (counting of empty osteocyte lacunae (%), apoptotic (%) and total osteoclasts, neutrophil and mononuclear inflammatory cells) analyzed. The variables were submitted to ANOVA/Bonferroni and t test (parametric data) (p <0.05, GraphPad Prism 5.0).Results:
Significant bone repair occurred in the groups treated with Mucograft®. High number of total inflammatory cells and neutrophils cells were showed in AG (p=0.026 and p=0.035) and AZ groups (p=0.005, p=0.034) on the control sides associated with delayed bone repair and the presence of devitalized bone tissue in AG and ZG on the Mucograft® side.Conclusion:
Mucograft® collagen matrix attenuated the inflammatory process in a mandible defect in rats submitted to the use of bisphosphonates (AG and ZG).
Full text:
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Index:
LILACS (Americas)
Main subject:
Collagen
/
Diphosphonates
Type of study:
Prognostic study
Limits:
Animals
Language:
English
Journal:
Acta cir. bras
Journal subject:
General Surgery
/
Procedimentos Cir£rgicos Operat¢rios
Year:
2020
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Centro Universitário Christus/BR
/
UNICHRISTUS/BR
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