BIOSTRAT - Biocompatible coatings for high
quality orthopaedic and dental implants
Funding agency: MATNANTECH, Project no. 58/2001
Coordinator: National Institute for RD in Optoelectronics INOE 2000
Project Leader: Dr. Mariana Braic
Partner: SC GEVALCO
INDUSTRIAL SRL
Project responsible: Eng. Costel Chira
Objectives
It is
crucial to continue developing and improving biomaterials because they play a
significant and integrated role in contemporary medicine. Physical Vapor
Deposition thin films are used globally for a wide range of functional
applications and have many desirable properties.
Because
of its low cost, good bio-mechanical performance, high corrosion resistance,
related processability, and advantageous bio-affinity, stainless steel is
widely used in orthopedics and dentistry. However, there are disadvantages to
using it as a biomaterial. These include low bio-functional performance and
decreased local corrosion resistance when exposed to solutions containing
chloride ions, different macromolecules made up of one or more long chains of
polypeptides, or even just amino acids, all of which are found in bodily fluids
of humans. As a result, when SS is implanted in the body, it releases metal
ions into its surroundings, which hurts the tissues. Applying thin films to the stainless steel
that have good biocompatibility, strong adhesion, and corrosion resistance is
one way to protect it.
The main
goal of the project is the development of cutting-edge coatings technology to
improve dental and orthopedic implant biocompatibility .
The
primary objective of the project is the development of state-of-the-art
coatings produced by PVD technology to enhance orthopedic and dental implant
biocompatibility.
Specific objectives:
- Implementing
the PVD type deposition technology in production
- Improvement of the technical and qualitative standards of the
final products
-
A rise in the quantity of
efficient technologies incorporated into domestic manufacturing lines
-
Increased biocompatibility
of the final coated implants
Results:
v Medico-surgical instruments coated with biocompatible PVD
synthesized coatings.
v Coated dental implants;
v Coated orthopedic implants;
v 
Five independent
reports attesting to the biocompatibility of the coatings.
Papers
published and presented at national and international conferences
- Properties
of titanium based hard coatings deposited by the cathodic arc method, I.
Microchemical and microstructural characteristics, M. Balaceanu,
V. Braic, D. Macovei, M. Genet, A. Manea, D. Pantelica,
M. Braic, F. Negoita, Journal of Optoelectronics and Advanced Materials, 4
(2002) 107 -114
- Corrosion
resistance of TiN coated 316L stainless steel in
artificial physiological solution, M. Braic, S. Zamfir, M. Balaceanu, V. Braic, G. Pavelescu, A. Zamfir, A.
Vladescu, Journal of Optoelectronics and Advanced Materials, 5 (2003)
503-510
- Synthesis
and characterization of TiN, TiAlN and TiN/TiAlN biocompatible coatings, M. Braic, M. Balaceanu, V. Braic, A. Vladescu, G. Pavelescu, M.
Albulescu, Surface and Coatings Technology, 200 (2005) 1014-1017,
- Deposition
and characterization of (Ti, Al) N / AlN
superhard nanostructured coatings prepared by cathodic arc technique, V. Braic, M.Balaceanu,
M. Braic, G. Pavelescu, A.Vladescu
Eight International Conference on Plasma Surface Engineering, PSE 2000,
September 9 – 13, 2002, Garmisch – Partenkirchen, Germany,
- Reactive
magnetron deposition of TiN films used in
biocompatible application, A.Vladescu, M.Balaceanu, V.Braic, G.Pavelescu, M.Braic, S.Zamfir, APP
Spring Meeting Bad Honnef 2003, Februariy 23-26, 2003, Germania
- Ti/TiN multilayer obtained by magnetron sputtering for
orthopedic implants A.Vladescu,
C.Cotrut, M.Braic, V.Braic, S. Zamfir, APP Spring Meeting Bad Honnef 2003, February 23-26, 2003, Germany
- Sinthesis and characterisation of biocompatible TiN
and TiAlN layers obtained by magnetron sputtering, M. Braic, A. Vladescu, C.Cotrut,
V. Braic, M. Balaceanu, Physics of Advanced
Materials Internat. Conf. - ICPAM 7, 10-12 June,
Iasi
- Corrosion
resistance in artifcial physiological solution
of 316L stainless steel A.Vladescu,
National Symposia of Biocompatible Materials, Constanta, 2001
- Synthesis
and characterization of Ti based hard coatings, M. Balaceanu,
V. Braic, M. Braic, A. Manea, D. Pantelica, D.
Macovei, F. Negoita, M. J. Genet, National Conference in Physics, Tg. Mures, 26 – 28 September, 2002
- Titanium
nitride as biocompatible material utilized in stomatology, A.Vladescu, C.M.Cotrut, M.Braic, V.Braic, S.Zamfir, M.Balaceanu, National Symposia of Biomaterials, Galati
20-22 November, Romania, 2003