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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Commercially available demineralized bone matrix compositions to regenerate calvarial critical-sized bone defects.

BACKGROUND: Demineralized bone matrix products are often used by surgeons to regenerate bone. Several different types of carriers have been combined with demineralized bone matrix to improve clinical handling and surgical outcome. The aim of the study was to quantitate bone regeneration in standard-sized calvarial defects (a critical-sized defect) in response to commercially available demineralized bone matrix formulations. METHODS: The commercial demineralized bone matrix formulations were tested as received in 8-mm-diameter calvarial critical-sized defects in an athymic rat model. The demineralized bone matrix treatment groups included the following: (1) Allomatrix; (2) demineralized bone matrix plus sodium hyaluronate ( DBX); (3) DBX with poly(DL-lactide) mesh; 4) Dynagraft; (5) Grafton; (6) Regenafil; and (7) human demineralized bone matrix without a carrier. An eighth treatment was a poly(DL-lactide) mesh. At designated times of 2, 4, and 8 weeks, the critical-sized defects were recovered and processed for undecalcified histology and histomorphometry. Histomorphometric data were subjected to an analysis of variance and Fisher's protected least significant difference multiple comparison test. Significance was established at p <or= 0.05. RESULTS: Allomatrix, Dynagraft, Regenafil, and poly(DL-lactide) mesh alone had less bone formation than DBX, Grafton, DBX plus mesh, and demineralized bone matrix. CONCLUSIONS: DBX, DBX plus mesh, demineralized bone matrix, and Grafton produced more bone formation than Allomatrix, Dynagraft, mesh alone, and Regenafil.[1]

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