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Bioactive Ti Metal and its Alloys Prepared by Chemical Treatments: State‐of‐the‐Art and Future Trends
Author(s) -
Kokubo Tadashi,
Yamaguchi Seiji
Publication year - 2010
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201080087
Subject(s) - biocompatibility , materials science , titanium , bond strength , apatite , metal , porosity , deposition (geology) , metallurgy , nanotechnology , composite material , chemical engineering , paleontology , adhesive , layer (electronics) , sediment , engineering , biology
Titanium metal and its alloys are widely used as various implants in orthopaedic and dental fields, because of their good biocompatibility and high mechanical strength. However, they do not bond to living bone. Here, we review the literature showing that they will spontaneously bond tightly to living bone, if they are treated with an acid or alkaline solution and then subjected to heat treatment. This occurs due to the materials becoming negatively or positively charged on their surfaces in the bodily environment, which induces apatite deposition. Porous Ti metal subjected to such treatment exhibits not only osteoconductivity but also osteoinductivity. Examples and clinical applications are reviewed.