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Bioactivity of cement type bone substitutes

Siek D., Czechowska J., Mróz W., Zima A., Burdyńska S., Załęczny R., Ślósarczyk A.

Bulletin of the Polish Academy of Sciences. Technical Sciences

2013

Vol. 61, nr 2

433--439

In vitro chemical stability and bioactivity of three different cement type bone substitutes were determined by incubating cement samples in the simulated body fluid (SBF) for 7 and 28 days. Morphology of sample surfaces has been studied using scanning electron microscopy (SEM) combined with an energy dispersive X-ray spectroscopy (EDS) and by atomic force microscopy (AFM). The diffuse reflectance Fourier-transform infrared spectroscopy (DRIFTS) was applied as a supplementary method. The development of bone-like apatite layers on the surface depended on their initial phase composition. Obtained cements showed good surgical handiness, high bioactive potential and were chemically stable. They seem to be promising materials for bone substitution.

Influence of thin films of bioglass and hydroxyapatite mixture deposited by PLD method on bioactivity of foam titanium implants

Mróz W., Budner B., Załęczny R., Bombalska A., Niedzielski K., Łączka M., Ślósarczyk A., Cholewa-Kowalska K., Douglas T. E. L., Schwarze D.

Engineering of Biomaterials

2012

Vol. 15, no. 116-117 spec. iss.

148

The introduction of different bioelements into the structure of hydroxyapatite exerts a positive influence on the growth of new bone tissue. One such useful bioelement is silica, which possesses antibacterial properties and also acts as a factor regulating bone mineralization through stimulation of DNA to synthesize osteoblasts. Results of investigations into integration of foam titanium implants (FTI), with rabbit bone are presented. Two groups of implants were investigated: clean titanium implants produced by selective laser melting and FTI coated with a thin film of hydroxyapatite (HA) mixed with 10 wt. % of bioglass (BG) of A2 type (CaO- P2P-SiO2). Analysis of histopathology of implants' integration with bone were performed by staining using the triple chromatographic method of Masson - Goldner, planimetric analysis using the Kruskal - Wallis test, an ANOVA test and microtomography. Application of layers of the type HA+GH showed superior integration with bone than uncoated titanium implants.

In vivo application of foam titanium implants with magnesium-doped octacalcium phosphate and hydroxyapatite thin films deposited by PLD method

Mróz W., Budner B., Załęczny R., Prokopiuk A., Niedzielski K., Ślósarczyk A., Douglas T. E. L., Scharze D.

Engineering of Biomaterials

2012

Vol. 15, no. 116-117 spec. iss.

141

Results of investigations into integration of foam titanium implants (FTI), with rabbit bone are presented. Three groups of implants were examined: clean titanium implants produced by selective laser melting, FTI coated with a thin film of octacalcium phosphate (OCP), doped with 0.6 weight percent of Mg, deposited by pulsed laser deposition (PLD), and FTI with hydroxyapatite (HA) doped with 0.6 wt.% of Mg. Analysis of histopathology of implants' integration with bone were performed by staining using the triple chromatographic method of Masson - Goldner, pla- nimetric analysis using the Kruskal - Wallis test, an ANOVA test and microtomography. The best results were obtained for implants coated with HA, followed by those coated with OCP. Implants from these two groups showed superior integration with bone than uncoated titanium implants.