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Comparison of Selective Laser Melted Titanium and Magnesium Implants Coated with PCL.

Matena J, Petersen S, Gieseke M, Teske M, Beyerbach M, Kampmann A, Murua Escobar H, Gellrich NC, Haferkamp H, Nolte I - Int J Mol Sci (2015)

Bottom Line: The SLM produced magnesium was compared with the titanium alloy TiAl6V4, as titanium is already established for the SLM-process.For testing the biocompatibility, we used primary murine osteoblasts.Results showed a reduced corrosion rate and good biocompatibility of the SLM produced magnesium with PCL coating.

View Article: PubMed Central - PubMed

Affiliation: Small Animal Clinic, University of Veterinary Medicine Hannover, Foundation, D-30559 Hannover, Germany. julia.matena@tiho-hannover.de.

ABSTRACT
Degradable implant material for bone remodeling that corresponds to the physiological stability of bone has still not been developed. Promising degradable materials with good mechanical properties are magnesium and magnesium alloys. However, excessive gas production due to corrosion can lower the biocompatibility. In the present study we used the polymer coating polycaprolactone (PCL), intended to lower the corrosion rate of magnesium. Additionally, improvement of implant geometry can increase bone remodeling. Porous structures are known to support vessel ingrowth and thus increase osseointegration. With the selective laser melting (SLM) process, defined open porous structures can be created. Recently, highly reactive magnesium has also been processed by SLM. We performed studies with a flat magnesium layer and with porous magnesium implants coated with polymers. The SLM produced magnesium was compared with the titanium alloy TiAl6V4, as titanium is already established for the SLM-process. For testing the biocompatibility, we used primary murine osteoblasts. Results showed a reduced corrosion rate and good biocompatibility of the SLM produced magnesium with PCL coating.

No MeSH data available.


Related in: MedlinePlus

Representative ESEM micrographs of non-coated (A–D) and polycaprolactone (PCL)-coated (E–H) magnesium structures after different corrosion time intervals (A,E: 0 days; B,F: 1 day; C,G: 3 days; D,H: 21 days).
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ijms-16-13287-f002: Representative ESEM micrographs of non-coated (A–D) and polycaprolactone (PCL)-coated (E–H) magnesium structures after different corrosion time intervals (A,E: 0 days; B,F: 1 day; C,G: 3 days; D,H: 21 days).

Mentions: Microscopic studies were performed to evaluate the in vitro corrosion-induced changes in surface morphology of the non-coated and polycaprolactone (PCL)-coated flat magnesium structures processed on a titanium plate. It was observed that the non-coated magnesium structures nearly disappeared in the short corrosion time of three weeks, while the PCL-coated structures seemed even to expand (Figure 2).


Comparison of Selective Laser Melted Titanium and Magnesium Implants Coated with PCL.

Matena J, Petersen S, Gieseke M, Teske M, Beyerbach M, Kampmann A, Murua Escobar H, Gellrich NC, Haferkamp H, Nolte I - Int J Mol Sci (2015)

Representative ESEM micrographs of non-coated (A–D) and polycaprolactone (PCL)-coated (E–H) magnesium structures after different corrosion time intervals (A,E: 0 days; B,F: 1 day; C,G: 3 days; D,H: 21 days).
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4490495&req=5

ijms-16-13287-f002: Representative ESEM micrographs of non-coated (A–D) and polycaprolactone (PCL)-coated (E–H) magnesium structures after different corrosion time intervals (A,E: 0 days; B,F: 1 day; C,G: 3 days; D,H: 21 days).
Mentions: Microscopic studies were performed to evaluate the in vitro corrosion-induced changes in surface morphology of the non-coated and polycaprolactone (PCL)-coated flat magnesium structures processed on a titanium plate. It was observed that the non-coated magnesium structures nearly disappeared in the short corrosion time of three weeks, while the PCL-coated structures seemed even to expand (Figure 2).

Bottom Line: The SLM produced magnesium was compared with the titanium alloy TiAl6V4, as titanium is already established for the SLM-process.For testing the biocompatibility, we used primary murine osteoblasts.Results showed a reduced corrosion rate and good biocompatibility of the SLM produced magnesium with PCL coating.

View Article: PubMed Central - PubMed

Affiliation: Small Animal Clinic, University of Veterinary Medicine Hannover, Foundation, D-30559 Hannover, Germany. julia.matena@tiho-hannover.de.

ABSTRACT
Degradable implant material for bone remodeling that corresponds to the physiological stability of bone has still not been developed. Promising degradable materials with good mechanical properties are magnesium and magnesium alloys. However, excessive gas production due to corrosion can lower the biocompatibility. In the present study we used the polymer coating polycaprolactone (PCL), intended to lower the corrosion rate of magnesium. Additionally, improvement of implant geometry can increase bone remodeling. Porous structures are known to support vessel ingrowth and thus increase osseointegration. With the selective laser melting (SLM) process, defined open porous structures can be created. Recently, highly reactive magnesium has also been processed by SLM. We performed studies with a flat magnesium layer and with porous magnesium implants coated with polymers. The SLM produced magnesium was compared with the titanium alloy TiAl6V4, as titanium is already established for the SLM-process. For testing the biocompatibility, we used primary murine osteoblasts. Results showed a reduced corrosion rate and good biocompatibility of the SLM produced magnesium with PCL coating.

No MeSH data available.


Related in: MedlinePlus