The structure and corrosive properties of the CoCr-base dental alloy obtained by soft material milling followed by sinterization

• Autorzy: Rylska D. , Sokołowski G. , Konieczny B. , Sokołowski J.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Presented researches aimed at evaluating the structure and corrosion properties of CoCr-base elements fabricated by means of soft material milling with later sinterization in a protective atmosphere in comparison to casted alloy. Design/methodology/approach: CoCr-base samples were fabricated by soft material milling followed by sinterization in neutral gas environment and casted by traditional casting techniques. EDS-SEM study was used to evaluate the microstructure and quantitative analysis of chemical composition. Corrosion resistance evaluation was based on examining corrosion parameters (Ecorr, jcorr, Rpol), corrosion behaviour of both kind of samples was also studied by using open circuit potential v/s time measurements to assess the protective nature of the applied manufacturing methods and by potentiodynamic polarisation technique. Findings: Differences in structure were found, sintered material was more homogenous in comparison to dendritic structure of the cast alloy. Corrosion parameters (corrosion potential - Ecorr, corrosion current density - jcorr, polarization resistance Rp , open circuit potential versus time - OCP) indicate higher corrosion resistance of sintered element. Course of the polarization curve proves, that the sintered alloy exhibits better self-passivating properties in comparison to casted material. Research limitations/implications: The research was carried out on samples, not on final restoration elements. As the technology based on soft CoCr-base alloy milling followed by sinterization in neutral gas environment has been developed last years, additional investigations are needed to obtain more precise results in corrosion properties evaluation. Originality/value: PM technology based on soft material milling with later sintering in a protective atmosphere is the new technology used for fabrication of metal prosthodontic dentures. This method seems to be promissing alternative to laser micro-sintering, and makes it possible to achieve a product with a far more homogenous structure in comparison to traditional casting and does not require as expensive instrumentation necessary for the SLM method. It is crucial to examine in details the corrosion resistance of elements obtained by this new technology.

Słowa kluczowe

EN

biomaterials; sintering; electrochemical corrosion resistance; SEM/EDS analysis

PL

biomateriały; spiekanie; elektrochemiczna odporność na korozję; analiza SEM-EDS

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2016
• Tom: Vol. 74, nr 2
• Strony: 60--71
• Opis fizyczny: Bibliogr. 37 poz., rys., tab.

Twórcy

autor

Rylska D.

• Institute of Materials Science and Engineering, Lodz University of Technology, ul. Stefanowskiego 1/15, 90-924 Łódź, Poland

autor

Sokołowski G.

• Department of Prosthetic Dentistry, Medical University of Lodz, ul. Pomorska 251, 92-213 Łódź, Poland

autor

Konieczny B.

• University Laboratory of Material Research, Medical University of Lodz, ul. Pomorska 251, 92-213 Łódź, Poland

autor

Sokołowski J.

• Department of General Dentistry, Medical University of Lodz, ul. Pomorska 251, 92-213 Łódź, Poland

Bibliografia

• [1] J.C. Wataha, Biocompatibility of dental casting alloys: A review, The Journal of Prosthetic Dentistry 83/2 (2000) 223-234.
• [2] C. Manaranche, H. Hornberger, A proposal for the classification of dental alloys according to their resistance to corrosion, Dental Materials 23 (2007) 1428-1437.
• [3] Metallic biomaterials: types and advanced applications, New functional biomaterials for medicine and healthcare, Woodhead Publishing Limited, 2014, 121-148.
• [4] M. Metikos-Hukovic, R. Babic, Passivation and corrosion behaviours of cobalt and cobalt-chromiummolybdenum alloy, Corrosion Science 49 (2007) 3570-3579.
• [5] I. Milosev, H.H. Strehblow, The composition of the surface passive film formed on CoCrMo alloy in simulated physiological solution, Electrochimica Acta 48 (2003) 2767-2774.
• [6] J-Ch. Chang, Y. Oshid, R.L. Gregory, C.J. Andres, T.M. Barco, D.T. Brown, Electrochemical study on microbiology-related corrosion of metallic dental materials, Bio-Medical Materials and Engineering 13 (2003) 281-295.
• [7] S. Karimi, T. Nickchi, M. Akram Alfantazi, Longterm corrosion investigation of AISI 316L, Co-28Cr6Mo and Ti-6Al-4V alloys in simulated body solutions, Applied Surface Science 258 (2012) 60876096.
• [8] P.Y. Eschler, L. Reclaru, H. Luthy, A. Blatter, C. Larue, C. Susz, J. Bosch, Corrosion Testing of CobaltChromium Dental Alloys doped with Precious Metals, European Cells and Materials 9/1 (2005) 64-65.
• [9] I. Milosev, The effect of biomolecules on the behaviour of CoCrMo alloy in various simulated physiological solutions, Electrochimica Acta 78 (2012) 259-273.
• [10] Ł. Reimann, L.A. Dobrzaski, B. Nieradka, M. Kusy, R. Riedlmajer, Influence the heat treatment of two base metal alloys used on dental prosthesis on corrosion resistance, Journal of Achievements in Materials and Manufacturing Engineering 57/2 (2013) 83-90.
• [11] L.A. Dobrzański, Ł. Reimann, Influence of Cr and Co on hardness and corrosion resistance CoCrMo alloys used on dentures, Journal of Achievements in Materials and Manufacturing Engineering 9/2 (2011) 193-198.
• [12] R. Galo, R.F. Ribeiro, R.C. Rodrigues, L.A. Rocha, G. De Mattos Mda, Effects of chemical composition on the corrosion of dental alloys, Brazilian Dental Journal 23 (2012) 141-148.
• [13] S. Bauer, P. Schmuki, K. von der Mark, J. Park, Engineering biocompatible implant surfaces Part I, Materials and surfaces Progress in Materials Science 58 (2013) 261-326.
• [14] D. Rylska, at al., Analysis of the surface of metallic biomaterials used in dental prosthetics produced by milling, Chemical Industry 91/5 (2012) 941-948.
• [15] G. Sokołowski, J. Sokołowski, D. Rylska, M.I. Szynkowska, The impact of production conditions on the structure and corrosion properties Starbond CoS - alloy dental Co-Cr-Mo-W, Materials Engineering, 34/6 (2013) 885-889.
• [16] D. Jevremovi, V. Koji, G. Bogdanovi, A selective laser method Co-Cr alloy used for the rapid manufacture of removable partial denture frameworks -initial screening of biocompatibility, Journal of Serbian Chemical Society 76 (2011) 43-52.
• [17] S.H. Suleiman, P. Vult von Steyern, Fracture strength of porcelain fused to metal crowns made of cast, milled or laser-sintered cobalt-chromium, Acta Odontologica Scandinavica 71 (2013) 1280-1289.
• [18] S.H. Tuna, N.Ö. Pekmez, I. Kürkçüo, Corrosion resistance assessment of Co-Cr alloy frameworks fabricated by CAD/CAM milling, laser sintering, and casting methods, The Journal of Prosthetic Dentistry 114 (2015) 725-734.
• [19] K.B. Kim, W.C. Kim, H.Y. Kim, J.H. Kim, An evaluation of marginal fit of threeunit fixed dental prostheses fabricated by direct metal laser sintering system, Dental Materials 29 (2013) 91-96.
• [20] T. Akova, Y. Ucar, A. Tukay, M.C. Balkaya, W.A. Brantley, Comparison of the bond strength of lasersintered and cast base metal dental alloys to porcelain, Dental Materials 24 (2008) 1400-1404.
• [21] Y. Ucar, T. Akova, M.S. Akyil, W.A. Brantley, Internal fit evaluation of crowns prepared using a new dental crown fabrication technique: laser-sintered CoCr crowns, The Journal Of Prosthetic Dentistry 102 (2009) 253-259.
• [22] X. Z. Xin, J. Chen, N. Xiang, B. Wei, Surface properties and corrosion behavior of Co-Cr alloy fabricated with selective laser melting technique, Cell Biochemistry and Biophysics 67(2013)983-990.
• [23] X.Z. Xin, J. Chen, N. Xiang, Y. Gong, B. Wei, Surface characteristics and corrosion properties of selective laser melted Co-Cr dental alloy after porcelain firing, Dental Materials 30 (2014) 263-270.
• [24] L.A. Dobrzański, A. Achtelik-Franczak, M. Król, Computer aided design in Selective Laser Sintering (SLS)-application in medicine, Journal of Achievements in Materials and Manufacturing Engineering 60/2 (2013) 66-74.
• [25] A. Stwora, G. Skrabalak, Influence of selected parameters of Selective Laser Sintering process on properties of sintered materials, Journal of Achievements in Materials and Manufacturing Engineering 61/2 (2013) 375-380.
• [26] T. Dikova, D. Dzhendov, M. Simov, Microstructure and hardness of fixed dental prostheses manufactured by additive technologies, Journal of Achievements in Materials and Manufacturing Engineering 71/2 (2015) 60-69.
• [27] M. Rosso, M. Actis Grande, High density sintered stainless steels with improved properties, Journal of Achievements in Materials and Manufacturing Engineering 21/2 (2007) 87-102.
• [28] M. Dourandish, D. Godlinski, A. Simchi, V. Firouzdor, Sintering of biocompatible P/M Co-Cr-Mo alloy (F-75) for fabrication of porosity-graded composite structures, Materials Science and Engineering A 472 (2008) 338-346.
• [29] M. Ghazali Kamardan, N. Hidayah A. Zaidi, M. Noh Dalimin, A. Jamil, The Sintering Temperature Effect on the Shrinkage Behavior of Cobalt Chromium Alloy, American Journal of Applied Sciences 7/11 (2010) 1443-1448.
• [30] B. Henriques, A. Bagheri, M. Gasik, J.C.M. Souza, O. Carvalho, F.S. Silva, R.M. Nascimento, Mechanical properties of hot pressed CoCrMo alloy compacts for biomedical applications, Materials & Design 83 (2015) 829-834.
• [31] E. Krasicka-Cydzik, Z. Oksiuta, J.R. Dabrowski, Corrosion testing of sintered samples made of the CoCr-Mo alloy for surgical applications, Journal of Materials Science: Materials in Medicine 16 (2005) 197-202.
• [32] N. Maizatul Shima Adzali, Shamsul Baharin Jamaludin, Mohd Nazree Derman, Effect of Sintering on the Physical and Mechanical Properties of Co-CrMo (F-75)/HAP Composites, Sains Malaysiana 42/12 (2013) 1763-1768.
• [33] M. Grądzka-Dahlke, J.R. Dąbrowski, B. Dąbrowski, Modification of mechanical properties of sintered implant materials on the base of Co-Cr-Mo alloy, Journal of Materials Processing Technology 204 (2008) 199-205.
• [34] K.P. Krug, A.W. Knauber, F.P. Nothdurft, Fracture behavior of metal-ceramic fixed dental prostheses with frameworks from cast or a newly developed sintered cobalt-chromium alloy, Clinical Oral Investigations 19 (2015) 401-411.
• [35] L. A. Dobrzański, Metallography of nonferrous metals alloys, The Silesian University of Technology Publishing, Gliwice, 2007 (in Polish).
• [36] Hae RiKim, Young KyungKim, Jun SikSon, Bong KiMin, Kyo-HanKim, Tae-YubKwon, Comparison of in vitro biocompatibility of Co-Cr dental alloy produced by new milling/post-sintering or traditional casting technique, Materials Letters 178 (2016) 300-303.
• [37] B. Henriques, D. Soares, F.S. Silva, Microstructure, hardness, corrosion resistance and porcelain shear bond strength comparison between cast and hot pressed CoCrMo alloy for metal-ceramic dental restorations, Journal of the Mechanical Behavior of Biomedical Materials 12 (2012) 83-92.