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| Abstract No.: |
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| Title: |
In vitro study of the bioactivity and biocompatibility of titanium and titanium/bioglass coatings
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| Authors: |
Xiao Huang* / Carleton University, Canada
Suzan Bsat / Carleton University, Canada
Bob De Snoo/ Carleton University, Canada
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| Abstract: |
The bioactivity and biocompatibility of plasma sprayed CP-Ti and CP-Ti/bioglassTM composite coatings were studied by immersion simulated body fluid (SBF). The bioactivity was analyzed by examining the changes in surface composition and hydroxyapatite (HA) formation using scanning electron microscopy and X-ray diffraction. The biocompatibility of the coatings was evaluated by measuring the mass change after immersion. After four weeks of immersion in SBF the amount of calcium measured on the CP-Ti/bioglass coating increased from 4 to 16 wt% while no noticeable increase in calcium was observed on CP-Ti coating. A growth of HA was observed on both coatings, although the relative intensity of HA on XRD spectrum was higher on CP-Ti/bioglassTM coating signifying a better osseointegration. It was also found that CP-Ti experienced a mass gain while CP-Ti/bioglass underwent a mass loss after SBF immersion. The mass loss of CP-Ti/bioglassTM is likely due to the dissolution of calcium and phosphate.
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