Abstract
The prime objectives in the development of biomaterials for dental applications are to improve the quality of osseointegration and to short the time needed to achieve it. Design of implants nowadays involves changes in the surface characteristics to obtain a good cellular response. Incorporating osteoinductive elements is one way to achieve the best regeneration possible post-implantation. This study examined the osteointegrative potential of two distinct biomaterials: sandblasted acid-etched titanium and a silica sol–gel hybrid coating, 70% MTMOS-30% TEOS. In vitro, in vivo, and proteomic characterisations of the two materials were conducted. Enhanced expression levels of ALP and IL-6 in the MC3T3-E1 cells cultured with coated discs, suggest that growing cells on such surfaces may increase mineralisation levels. 70M30T-coated implants showed improved bone growth in vivo compared to uncoated titanium. Complete osseointegration was achieved on both. However, coated implants displayed osteoinductive properties, while uncoated implants demonstrated osteoconductive characteristics. Coagulation-related proteins attached predominantly to SAE-Ti surface. Surface properties of the material might drive the regenerative process of the affected tissue. Analysis of the proteins on the coated dental implant showed that few proteins specifically attached to its surface, possibly indicating that its osteoinductive properties depend on the silicon delivery from the implant.
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Acknowledgements
This work was supported by MAT2017-86043-R (MINECO); Universidad Jaume I under UJI-B2017-37 and Grant Predoc/2014/25; University of the Basque Country (UPV/EHU) through UFI11/56; Basque Government through IT611-13 and Grant Predoc/2016/1/0141, and Generalitat Valenciana under Grant Grisolia/2014/016. Authors would like to thank Antonio Coso and Jaime Franco (GMI-Ilerimplant) for their inestimable contribution to this study, and Raquel Oliver, José Ortega (UJI) and Iraide Escobes (CIC bioGUNE) for their valuable technical assistance.
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Araújo-Gomes, N., Romero-Gavilán, F., García-Arnáez, I. et al. Osseointegration mechanisms: a proteomic approach. J Biol Inorg Chem 23, 459–470 (2018). https://doi.org/10.1007/s00775-018-1553-9
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DOI: https://doi.org/10.1007/s00775-018-1553-9