Leonida A, Caccianiga G, Porcaro G, Longoni S, Ceraulo S, Baldoni M. Evaluation of the degree of differentiation of human mesenchimal stem cells on different titanium superfaces: a pilot study.
J BIOL REG HOMEOS AG 2019;
33:89-98. DENTAL SUPPLEMENT. [PMID:
31828998]
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Abstract
UNLABELLED
The aim of our study was to evaluate the properties of a laser-modified titanium surface, specifically the promotion of a faster differentiation of human Mesenchymal Stem Cells (hMSCs) into osteoblasts and a more stable connection between differentiated cells and titanium, compared to machined and sand-blasted surfaces. Furthermore, we wanted to assess if the titanium alone could be a sufficient factor in the induction of the differentiation towards the osteogenic lineage.
MATERIALS AND METHODS
we harvested stem cells from an individual (under his consensus) and cultivated them into dishes containing titanium disks presenting three different surfaces: machined (M), sand-blasted (S) and laser-modified (L). In the test group, cells were cultivated in an osteogenic medium, while in the control group, cells were seeded in a standard DMEM. Evaluations of the degree of differentiation were made with Alizarin coloration after 28, 38, 42, 49, 56 and 63 days from induction.
RESULTS
no signs of differentiation were evident in the control group, while in the test group there was a statistically significant differentiation, evident since the fourth week. Laser-modified and sand-blasted surfaces showed similar values, higher than the machined surface.
DISCUSSION
on the laser-modified surface the differentiation reached its peak on the sixth week, while on the seventh week for the other two surfaces. After the peak, the differentiation showed a slow decrease for the laser-modified surface and a rapid decrease for the other two.
CONCLUSIONS
titanium alone can't be considered enough to induce differentiation of human Mesenchymal Stem Cells into osteoblasts. Still, the laser-modified once induced a faster differentiation of stem cells and a more stable connection between osteoblasts and titanium.
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