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  • Kassapidou, MariaGothenburg University,Göteborgs universitet,Institutionen för odontologi,Institute of Odontology,Univ Gothenburg, Sahlgrenska Acad, Inst Odontol, Dept Prosthodont Dent Mat Sci, Box 450, SE-40530 Gothenburg, Sweden.;Inst Postgrad Dent Educ, Dept Prosthet Dent, Box 1030, SE-55111 Jönköping, Sweden. (author)

Cobalt-chromium alloys fabricated with four different techniques: Ion release, toxicity of released elements and surface roughness

  • Article/chapterEnglish2020

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  • Elsevier BV,2020

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  • LIBRIS-ID:oai:gup.ub.gu.se/298208
  • https://gup.ub.gu.se/publication/298208URI
  • https://doi.org/10.1016/j.dental.2020.08.012DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-425485URI

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  • Language:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

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  • Objective. To investigate the metal ion release, surface roughness and cytoxicity for Co-Cr alloys produced by different manufacturing techniques before and after heat treatment. In addition, to evaluate if the combination of materials affects the ion release. Methods. Five Co-Cr alloys were included, based on four manufacturing techniques. Commercially pure titanium, CpTi grade 4 and a titanium alloy were included for comparison. The ion release tests involved both Inductive Coupled Plasma Optical Emission Spectrometry and Inductive Coupled Plasma Mass Spectrometry analyses. The surface analysis was conducted with optical interferometry. Cells were indirectly exposed to the materials and cell viability was evaluated with the MTT (3-(4.5-dimethylthiazol-2-yl)-2.5-diphenyltetrazolium bromide) method. Results. All alloys showed a decrease of the total ion release when CpTi grade 4 was present. The total ion release decreased over time for all specimens and the highest ion release was observed from the cast and milled Co-Cr alloy in acidic conditions. The cast and laser-melted Co-Cr alloy and the titanium alloy became rougher after heat treatment. All materials were within the limits of cell viability according to standards. Significance. The ion release from Co-Cr alloys is influenced by the combination of materials, pH and time. Surface roughness is influenced by heat treatment. Furthermore, both ion release and surface roughness are influenced by the manufacturing technique and the alloy type. The clinical implication needs to be further investigated. (C) 2020 The Academy of Dental Materials. Published by Elsevier Inc.

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  • Hjalmarsson, Lars,1958Uppsala universitet,Gothenburg University,Göteborgs universitet,Institutionen för odontologi, sektion 2,Institute of Odontology, Section 2,Centrum för klinisk forskning i Sörmland (CKFD),Univ Gothenburg, Sahlgrenska Acad, Inst Odontol, Dept Prosthodont Dent Mat Sci, Box 450, SE-40530 Gothenburg, Sweden.;Folktandvarden Sormland AB, Malar Hosp, Specialist Dent Clin, SE-63188 Eskilstuna, Sweden.(Swepub:gu)xhjlar (author)
  • Johansson, Carina B.,1955Gothenburg University,Göteborgs universitet,Institutionen för odontologi, sektion 2,Institute of Odontology, Section 2,Univ Gothenburg, Sahlgrenska Acad, Inst Odontol, Dept Prosthodont Dent Mat Sci, Box 450, SE-40530 Gothenburg, Sweden.(Swepub:gu)xjohca (author)
  • Hammarström Johansson, Petra,1967Gothenburg University,Göteborgs universitet,Institutionen för odontologi, sektion 2,Institute of Odontology, Section 2,Univ Gothenburg, Sahlgrenska Acad, Inst Odontol, Dept Prosthodont Dent Mat Sci, Box 450, SE-40530 Gothenburg, Sweden.(Swepub:gu)xhampe (author)
  • Morisbak, E.Nord Inst Dent Mat, NIOM, Sognsveien 70, N-0855 Oslo, Norway. (author)
  • Wennerberg, Ann,1955Gothenburg University,Göteborgs universitet,Institutionen för odontologi, sektion 2,Institute of Odontology, Section 2,Univ Gothenburg, Sahlgrenska Acad, Inst Odontol, Dept Prosthodont Dent Mat Sci, Box 450, SE-40530 Gothenburg, Sweden.(Swepub:gu)xwenan (author)
  • Franke Stenport, Victoria,1970Gothenburg University,Göteborgs universitet,Institutionen för odontologi, sektion 2,Institute of Odontology, Section 2,Univ Gothenburg, Sahlgrenska Acad, Inst Odontol, Dept Prosthodont Dent Mat Sci, Box 450, SE-40530 Gothenburg, Sweden.(Swepub:gu)xstevi (author)
  • Göteborgs universitetInstitutionen för odontologi (creator_code:org_t)

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  • In:Dental Materials: Elsevier BV36:110109-56411879-0097

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