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Brazilian Journal of Oral Sciences
Piracicaba Dental School - UNICAMP
EISSN: 1677-3225
Vol. 12, No. 2, 2013, pp. 143-147
Bioline Code: os13029
Full paper language: English
Document type: Research Article
Document available free of charge

Brazilian Journal of Oral Sciences, Vol. 12, No. 2, 2013, pp. 143-147

 en Proliferation of human periodontal ligament mesenchymal cells on polished and plasma nitriding titanium surfaces
Alves Ribeiro, Rodrigo; Gadelha Vasconcelos, Rodrigo; Ginani, Fernanda; da Silva, José Sandro Pereira; Alves-Júnior, Clodomiro & Barboza, Carlos Augusto Galvão

Abstract

Aim: To evaluate the proliferative capacity of mesenchymal cells derived from human periodontal ligament on polished and plasma-treated titanium surfaces.
Methods: Eighteen titanium disks were polished and half of them (n=9) were submitted to plasma nitriding using the cathodic cage technique. Mesenchymal cells were isolated from periodontal ligament of impacted third molars (n=2) and cultured on titanium disks (polished and nitrided) and on a plastic surface as a positive control of cell proliferation. Cell proliferation was analyzed and growth curves were constructed for the different groups by determining the number of cells adhered to the different surfaces at 24, 48 and 72 h after plating.
Results: Higher cell number was observed for the nitrided surface at 24 and 48 h. However, no statistically significant difference in cell proliferation was observed between the two different surface treatments (p>0.05).
Conclusions: We concluded that plasma nitriding produced surfaces that permitted the proliferation of human periodontal ligament mesenchymal cells. Associated to other physical and chemical properties, it is possible to assume the feasibility of plasma nitriding method and its positive effect on the early cellular events of osseointegration.

Keywords
biocompatible materials, titanium, cell proliferation, periodontal ligament

 
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