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Titanium release from implants prepared with different surface roughness
Author(s) -
Wennerberg Ann,
IdeEktessabi Ari,
Hatkamata Shino,
Sawase Takashi,
Johansson Carina,
Albrektsson Tomas,
Martinelli Anna,
Södervall Ulf,
Odelius Hans
Publication year - 2004
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1111/j.1600-0501.2004.01053.x
Subject(s) - materials science , in vivo , surface roughness , titanium , surface modification , biomedical engineering , implant , surface finish , analytical chemistry (journal) , nuclear chemistry , chemistry , composite material , chromatography , metallurgy , surgery , medicine , microbiology and biotechnology , biology
Objectives: There may be a risk of greater ion release for surface‐enlarged implants than conventionally turned components. The major aim of the present paper was to investigate whether a correlation exists between ion release and a surface roughness relevant for today's commercial implants. Other aims were to compare ion release after two insertion times and concentration in bone tissue as a function of distance from the implant surface. Material and methods: Lactic acid aqueous solution (pH=2.3) and phosphate‐buffered saline were used for the in vitro investigation. For the in vivo investigation, synchrotron radiation X‐ray fluorescence (SRXRF) spectroscopy and secondary ion mass spectroscopy (SIMS) were performed 12 weeks and 1 year after implantation in rabbit tibiae. Results: The average height deviation ( S a ) was 0.7, 1.27, 1.43 and 2.21 μm, respectively, for the four surfaces investigated. No difference in ion release was found in vitro . In vivo , SRXRF demonstrated slightly higher values for the roughest surface up to a distance of 400 μm from the implant surface; thereafter no difference was found. SIMS demonstrated no difference in ion release for the roughest and smoothest surfaces, but slightly more titanium in bone tissue after 1 year than after 12 weeks. Titanium rapidly decreased with distance from the implant surface. Conclusion: At a level relevant for commercial oral implants, no correlation was found between increasing roughness and ion release, neither in vitro nor in vivo .