In vitro cytotoxicity and surface topography evaluation of additive manufacturing titanium implant materials

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

Organisaatiot

  • Vrije Universiteit Amsterdam
  • University of Turku
  • University of Helsinki
  • Karolinska Institutet

Kuvaus

Custom-designed patient-specific implants and reconstruction plates are to date commonly manufactured using two different additive manufacturing (AM) technologies: direct metal laser sintering (DMLS) and electron beam melting (EBM). The purpose of this investigation was to characterize the surface structure and to assess the cytotoxicity of titanium alloys processed using DMLS and EBM technologies as the existing information on these issues is scarce. “Processed” and “polished” DMLS and EBM disks were assessed. Microscopic examination revealed titanium alloy particles and surface flaws on the processed materials. These surface flaws were subsequently removed by polishing. Surface roughness of EBM processed titanium was higher than that of DMLS processed. The cytotoxicity results of the DMLS and EBM discs were compared with a “gold standard” commercially available titanium mandible reconstruction plate. The mean cell viability for all discs was 82.6% (range, 77.4 to 89.7) and 83.3% for the control reconstruction plate. The DMLS and EBM manufactured titanium plates were non-cytotoxic both in “processed” and in “polished” forms.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli53
Sivumäärä7
JulkaisuJournal of Materials Science: Materials in Medicine
Vuosikerta28
Numero3
Varhainen verkossa julkaisun päivämäärä2017
TilaJulkaistu - 2017
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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