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Surface characteristics and bioactivation of sandblasted and acid-etched (SLA) Ti-10Nb-10Ta alloy for dental implant

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Abstract

Titanium and titanium alloys are amenable to processing as dental implant materials because of their low density, good mechanical properties, better biocompatibility, and excellent corrosion resistance. However, titanium-based implants cannot bond directly to bone. To induce osseointegration, numerous surface-treatment techniques have been investigated over the years to improve implant performance. In this study, we examine sandblasting and acid etching (SLA) methods to determine the various properties of SLA-treated Ti-10Nb-10Ta alloy. The SLA treatment included two steps: first, mechanically polished Ti-10Nb-10Ta alloy was subjected to grit blasting using 110-µm alumina particles, and second, the blasted alloy underwent acid etching for 9 minutes with a mixture of H2SO4 and HCl at 100°C. After etching with Keller’s etchant, the Ti-10Nb-10Ta alloy showed a lamellar structure on optical microscopy, and surface roughness was increased after SLA treatment (p<0.05). The apatite layer that formed on the SLA-treated Ti-10Nb-10Ta alloy after immersion in simulated body fluid was approximately 2 µm thick, thus improving adhesion to bone. Wettability of the SLA-treated Ti-10Nb-10Ta alloy was better than that of the non-treated one. In vitro studies showed no cytotoxicity from either the untreated or the SLA-treated Ti-10Nb-10Ta alloys.

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Authors and Affiliations

  1. Department of Prosthodontics, Institute of Oral Bioscience, School of Dentistry, Chonbuk National University, 567, Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do, 561-756, South Korea

    Won-Mi Bok & Ju-Mi Park

  2. Department of Dental Biomaterials and Institute of Biodegradable Material, Institute of Oral Bioscience and BK21 plus project, School of Dentistry, Chonbuk National University, 567, Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do, 561-756, South Korea

    Seo-Young Kim & Min-Ho Lee

  3. Department of New Drug Discovery and Development, Chungnam National University, 99, Daehak-ro, Yuseong-gu, Daejeon, 305-764, South Korea

    Sook-Jeong Lee

  4. Industry & Academia Cooperation Foundation, Myongji University, 116, Myongji-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, 449-728, South Korea

    Gwi-Su Shin

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  1. Won-Mi Bok
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Correspondence to Min-Ho Lee.

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Bok, WM., Kim, SY., Lee, SJ. et al. Surface characteristics and bioactivation of sandblasted and acid-etched (SLA) Ti-10Nb-10Ta alloy for dental implant. Int. J. Precis. Eng. Manuf. 16, 2185–2192 (2015). https://doi.org/10.1007/s12541-015-0281-0

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  • DOI: https://doi.org/10.1007/s12541-015-0281-0

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