Abstract
This study was concerned with the adhesion of resin cement to metal surfaces obtained by selective laser melting process (SLM), and how it could be improved the bond strength at the biocomposite-metal junction. The SLM substrates were manufactured out of pure titanium (Ti), Ti6Al7Nb, and CoCr alloys. The metallic surfaces were covered with 5 types of biocomposites: 2 commercially resin-modified glass-ionomer cements (GC Fuji Plus and KETAC CEM) and 3 types of in-house developed materials. These biocomposites were mechanical characterized under compression and bending trials. The biocomposites-metal adhesion was settled both on as built metallic surfaces and after they were sandblasted with alumina. All the sandblasted SLM surfaces presented higher adhesion strength in comparison with the untreated specimens. The CoCr specimens show the highest bonding value. Additionally, the morphological aspects of joining interfaces were investigated using a scanning electron microscope (SEM). The mechanical properties and metal adhesion of these biocomposites were influenced by the liquid powder ratio. It is essential to apply a surface treatment on SLM substrate to achieve a stronger bond. Also, the chemical composition of biocomposite is a major factor which may improve the adhesion of it on different metallic substrates.
Highlights
The composition of the implant material and its surface characteristics are of special interest in implantology, as they initially influence the fibrin binding capacity and growth factor release, affecting the direct migration of mesenchymal cells [1].The oral environment is conducive to corrosion in which the metal is attacked by the presence of natural agents, temperature fluctuations, and changes in pH due to feeding, resulting in the partial or complete dissolution, damage, or weakening of any solid substance [2]
The results obtained are in accordance with the literature [50], where the Ra values for selective laser melting process (SLM) samples are between 5 μm ≤ Ra ≤ 40 μm and depend mainly on SLM processing and powder properties
This study was focused on the main mechanical properties; adhesion and morphology of glass ionomer cement biocomposite-metal implants
Summary
The composition of the implant material and its surface characteristics are of special interest in implantology, as they initially influence the fibrin binding capacity and growth factor release, affecting the direct migration of mesenchymal cells [1].The oral environment is conducive to corrosion in which the metal is attacked by the presence of natural agents (air and water), temperature fluctuations (hot and cold), and changes in pH due to feeding, resulting in the partial or complete dissolution, damage, or weakening of any solid substance [2]. The composition of the implant material and its surface characteristics are of special interest in implantology, as they initially influence the fibrin binding capacity and growth factor release, affecting the direct migration of mesenchymal cells [1]. Establishing a surface which generates an optimal composition and conformation for the attachment of osteogenic cells to the surface is one of the most important production strategies. Several methods have been developed to produce nanoscale structures on the surface of titanium (Ti). Nanoscale surfaces have a high surface energy, which increases the initial adsorption of proteins. This factor is very important in regulating cellular interactions on the implant surface
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
