Abstract
One of the most important goals of the periodontal therapy procedures is to stimulate the formation of new bone into osseous defects resulted from periodontal disease. A wide range of grafting materials is used to achieve this aim. Recently, the Human Tissue Bank of the National Center for Scientific Research ‘Demokritos’ in Athens (Greece) has prepared, in a preliminary study, a cancellous bovine-derived bone matrix (BBM). The purpose of the present work was to investigate the role of this bovine bone material in the periodontal regeneration, by studying the rate of human periodontal ligament (PDL) cells proliferation in the presence of this matrix alone, or after the addition of the growth factors, platelet-derived growth factor-BB (PDGF-BB) or recombinant human bone morphogenetic protein-2 (rhBMP-2).
Bovine bone graft was prepared using the ‘know how’ acquired by the 30 years continuous preparation and delivery of lyophilized human bone grafts by the ‘Demokritos’ Bank.
PDL cells cultures were derived from the mid root of two maxillary premolars. The teeth were caries-free and were extracted for orthodontic reasons from 1 adult female patient. Cells were grown in 24-well dishes in the presence of 20 mg BBM. On day 2 of quiescence, new medium was added with 10 ng/ml of PDGF-BB or 50 ng/ml of rhBMP-2. To determine the effects of the test agents on cell proliferation, DNA synthesis was estimated by measuring [3H] thymidine incorporation. After 48 h of incubation the cells were processed to subject to scintillation counting. Counts per minute (cpm/well) were determined for each sample.
The results revealed that this BBM has the ability to maintain PDL cells proliferation and could be used as an alternative graft material. PDGF-BB when added improved the cell proliferative response resulting in a more active BBM, while the presence of rhBMP-2 did not support cell mitosis.
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Vavouraki, H., Dereka, X., Vrotsos, I. et al. Ability of a bovine bone graft, alone or enriched with PDGF-BB or rhBMP-2, to promote human periodontal ligament (PDL) cells proliferation. A preliminary study. Cell Tissue Banking 4, 17–23 (2003). https://doi.org/10.1023/A:1026383604279
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DOI: https://doi.org/10.1023/A:1026383604279