Calcium phosphate bioceramics research in Latvia

Gross, Kārlis Agris; Bērziņa, Līga; Cimdiņš, Rūdolfs; Gross, V.

doi:10.1016/s0272-8842(98)00028-5

Cited by 11 publications

(9 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As expected, higher temperature with the tooth powders had much reduced CO 3 2− content. This character was consistent with the TG/DTA analysis and was in agreement with the study of Gross and Berzina,34 who reported that CO 3 2− may be removed by heating above 850°C. The results obtained from the FTIR analysis showed that the tooth powders had thermal behavior similar to that of stoichiometric HA, which gradually releases OH ions at high temperature 19, 27…”

Section: Resultssupporting

confidence: 92%

“…33 As expected, higher temperature with the tooth powders had much reduced CO 3 2À content. This character was consistent with the TG/DTA analysis and was in agreement with the study of Gross and Berzina, 34 who reported that CO 3 2À may be removed by heating above 850 C. The results obtained from the FTIR analysis showed that the tooth powders had thermal behavior similar to that of stoichiometric HA, which gradually releases OH ions at high temperature. 19,27 ICP atomic emission spectrometer The phase constitutions and chemical homogeneities of the tooth powder samples were further examined using quantitative chemical analysis of Ca and P via ICP spectroscopy of selected samples.…”

Section: Ftir Analysissupporting

confidence: 91%

See 1 more Smart Citation

Calcium phosphate bioceramics fabricated from extracted human teeth for tooth tissue engineering

et al. 2011

View full text Add to dashboard Cite

Bioceramic tooth powders were prepared via heat treatment of extracted human teeth using sintering temperatures between 600°C and 1200°C, and their properties were investigated for potential tooth tissue engineering. The sintered human tooth powders were characterized using thermal analysis (thermogravimetric analysis (TG) and differential thermal analysis (DTA)), field emission scanning electron microscopy, X-ray diffraction, energy dispersive X-ray spectroscopy, and Fourier transformed infrared (FTIR) spectroscopy. Additionally, the phase constitutions and chemical homogeneities of the composite samples were examined using a quantitative chemical analysis with inductively coupled plasma spectroscopy. The results revealed that the annealing process produced useful hydroxyapatite-based bioceramic biomaterials when annealed above 1000°C. The FTIR spectra and the TG/DTA thermograms of the tooth powders indicated the presence of organic compounds, which were completely removed after annealing at temperatures above 1000°C. The tooth powders annealed between 1000°C and 1200°C had good characteristics as bioceramic biomaterials. Furthermore, the biocompatibility of each tooth powder was evaluated using in vitro and in vivo techniques; our results indicate that the prepared human tooth powders have great potential for tooth tissue engineering applications.

show abstract

Section: Resultssupporting

confidence: 92%

Section: Ftir Analysissupporting

confidence: 91%

Calcium phosphate bioceramics fabricated from extracted human teeth for tooth tissue engineering

et al. 2011

View full text Add to dashboard Cite

show abstract

“…Then, 37.86 g milled CaHPO 4 •2H 2 O and 11.81 g milled CaCO 3 were dissolved in 70 ml anhydrous ethanol, mixed by ultrasonic stirring for 3 h and then dried in an oven. Finally, the β-TCP powders could be synthesized after calcination at 900 °C for 3 h [24]. Another three methods were used for comparison with the improved β-TCP.…”

Section: Preparation Of Improved β-Tcp Powdersmentioning

confidence: 99%

Novel β -TCP/PVA bilayered hydrogels with considerable physical and bio-functional properties for osteochondral repair

Hui-yuan¹,

Kang²,

Li³

et al. 2017

Biomed. Mater.

View full text Add to dashboard Cite

Cartilage repairing grafts have been widely studied, and osteochondral replacement hydrogels have proven to be an excellent method in research and clinical fields. However, it has been difficult to simultaneously solve three main issues in osteochondral replacement preparation: surface lubrication, overall mechanical support and good simulations of cell regeneration. A novel integrated bilayered hydrogel osteochondral replacement was constructed by blending polyvinyl alcohol (PVA) and β-tricalcium phosphate (β-TCP) in this study. Separated nano-ball milling with ultrasound dispersion prepared β-TCP demonstrated suitable properties of tiny particle size, high purity and ideal distribution, improving the mechanical properties of the novel integrated hydrogel, and providing a cartilage-like lubrication effect and high biocompatibility, including cytocompatibility and osteogenesis. The reinforcement of β-TCP and integrated molding technology enabled the hydrogel to demonstrate excellent component compatibility and good bonding between the two layers, which promoted the strengthening of the compression modulus and tensile modulus up to three times by mechanical testing. The surface lubrication properties of the novel osteochondral hydrogel were similar to the natural cartilage by friction coefficient characterization. The two layers of the novel integrated graft provided a considerable bio-function by co-culturing with chondrocytes and synovium mesenchymal stem cells: chondrocytes promoted adherence achieved by the upper density layer and better osteogenesis performance of the porous lower layer. The design of the bilayered β-TCP/PVA osteochondral hydrogel is promising for use in articular cartilage repair.

show abstract

“…However, it cannot be excluded that, after longer dissolution times, those orthophosphate groups may appear on the glass surface. Figure 13 compares the spectrum taken from the layer developed on the surface of the glass sample Al0 after dipping in SBF for 30 days with the FTIR spectrum of the hydroxycarbonate apatite powder taken from Gross et al (1999) [38]. The comparison confirms the formation of a hydroxycarbonate apatite layer on the surface of the Al0 glass sample after dipping in SBF.…”

Section: Resultsmentioning

confidence: 72%

Influence of addition of Al₂O₃ on physical, structural, acoustical and in‐vitro bioactive properties of phosphate glasses

Manupriya

Thind

Singh

et al. 2009

Physica Status Solidi (a)

View full text Add to dashboard Cite

Four different formulations of phosphate glasses in the system P2O5–CaO–Na2O–Al2O3 were developed. The elastic moduli have been obtained using the known method at room temperature. Their physicochemical and structural evolution was analyzed during in‐vitro degradation in SBF (simulating body fluid) at 37 °C after 30 days. The results showed that the weight loss of the glass is greatly reduced with the incorporation of only 3 mol% of Al2O3 in P2O5–CaO–Na2O glass composition. Fourier transform infrared (FTIR) spectroscopy performed on glasses before and after dipping in SBF showed calcium phosphate glasses in the system P2O5–CaO–Na2O reinforced with Al2O3 offer an interesting option for slowly resorbable materials as compared to other calcium phosphate glasses with high degradation velocity. The chemical formulation of these glasses allows the synthesis of materials with a controlled solubility. However, the substitution of Al2O3 ≥ 5 mol% negatively affects the bioactivity of the P2O5–CaO–Na2O glasses. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

show abstract

Calcium phosphate bioceramics research in Latvia

Cited by 11 publications

References 11 publications

Calcium phosphate bioceramics fabricated from extracted human teeth for tooth tissue engineering

Calcium phosphate bioceramics fabricated from extracted human teeth for tooth tissue engineering

Novel β -TCP/PVA bilayered hydrogels with considerable physical and bio-functional properties for osteochondral repair

Influence of addition of Al₂O₃ on physical, structural, acoustical and in‐vitro bioactive properties of phosphate glasses

Contact Info

Product

Resources

About

Calcium phosphate bioceramics research in Latvia

Cited by 11 publications

References 11 publications

Calcium phosphate bioceramics fabricated from extracted human teeth for tooth tissue engineering

Calcium phosphate bioceramics fabricated from extracted human teeth for tooth tissue engineering

Novel β -TCP/PVA bilayered hydrogels with considerable physical and bio-functional properties for osteochondral repair

Influence of addition of Al2O3 on physical, structural, acoustical and in‐vitro bioactive properties of phosphate glasses

Contact Info

Product

Resources

About

Influence of addition of Al₂O₃ on physical, structural, acoustical and in‐vitro bioactive properties of phosphate glasses