Natural bioceramics: from coral to bone and beyond

Ben‐Nissan, Besim

doi:10.1016/j.cossms.2003.10.001

Cited by 208 publications

(133 citation statements)

References 16 publications

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“…Moreover, if the sample does not possess a considerable amount of pores below 6 nm, the skeletal density should be close to the material (solid) absolute density. Thus, it is not surprising that the calcined samples generally exhibit skeletal densities near to 3 g/cm 3 , which is close to the theoretical density of hydroxyapatite (3.16 g/cm 3 ) [43], being those of the control samples about 2 g/cm 3 , in agreement with their water and organic content. It should also be emphasized that the value measured for the bulk density of the non-calcined human bone (1.89 g/cm 3 ) is close to that reported in the literature [22].…”

Section: Mercury Porosimetrysupporting

confidence: 55%

“…The alternatives can be allografts, xenografts and synthetic biomaterials [1][2][3][4][5]. Allografts and xenografts, even though currently applied, can introduce risk of rejection and disease transfer [1][2][3]6]. Synthetic hydroxyapatite minimizes these limitations but lacks osteoinductive properties and exhibits poor mechanical properties specially when exposed to wet environments [4,5,7].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of the calcination temperature on the composition and microstructure of hydroxyapatite derived from human and animal bone

Figueiredo

Fernando

Martins

et al. 2010

Ceramics International

325

198

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The present work focus the study of cortical bone samples of different origins (human and animal) subjected to different calcination temperatures (600, 900 and 1200 8C) with regard to their chemical and structural properties. For that, not only standard techniques such as thermogravimetric analysis, Fourier transform infrared spectroscopy, X-ray diffraction and scanning electron microscopy were used but also mercury intrusion porosimetry. The latter technique was applied to evaluate the effects of the temperature on the microstructure of the calcined samples regarding porosity and pore size distribution.Although marked alterations in structure and mineralogy of the bone samples on heating were detected, these alterations were similar for each specimen. At 600 8C the organic component was removed and a carbonate apatite was obtained. At 900 8C, carbonate was no longer detected and traces of CaO were found at 1200 8C. Crystallinity degree and crystallite size progressively increased with the calcination temperature, contrary to porosity that strongly decreased at elevated temperatures. In fact, relatively to the control samples, a significant increase in porosity was found in samples calcined at 600 8C (reaching values around 50%). At higher temperatures, a dramatic decrease was observed, reaching, at 1200 8C, values comparable to those of the non-calcined bone. #

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Section: Mercury Porosimetrysupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

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Effect of the calcination temperature on the composition and microstructure of hydroxyapatite derived from human and animal bone

Figueiredo

Fernando

Martins

et al. 2010

Ceramics International

325

198

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“…In the human body calcium is used for muscle, bone, and digestive system functions; magnesium is required for processing ATP, and it builds bone and influences alkalinity; phosphorous is required for bones and body energy processing; and potassium and sodium are required electrolytes for the heart and nerves. Due to the origin of this waste material, this RRM can be considered as an ecomaterial (7Á9, 17,18).…”

Section: Resultsmentioning

confidence: 99%

Biomaterials from beer manufacture waste for bone growth scaffolds

Martín-Luengo

Yates

Ramos

et al. 2011

Green Chemistry Letters and Reviews

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“…Ben Nissan (2003) has discussed the use of natural and synthetic calcium phosphate bioceramics as bone grafts in orthopaedics and dentistry. HA can be found in the teeth and bones in the human body.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterisation of nanocrystalline hydroxyapatite from sea shells

Santhosh

Prabu

2012

IJBNN

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Nanocrystalline hydroxyapatite was synthesised by wet chemical reaction between sea shells (CaCO 3 ) which were thermally converted to amorphous calcium oxide (CaO) and then to calcium hydroxide (Ca(OH) 2 ) and reacted with phosphoric acid (H 3 PO 4 ). Two experiments were conducted using wet chemical synthesis method. Hydroxyapatite (HA) was synthesised by slow addition of phosphoric acid in to calcium hydroxide (Ca(OH) 2 ) without microwave irradiation and in another method; microwave irradiation was carried out after the reactants were combined in a similar manner. In both the experiments, the Ca:P ratio of 1.67 was maintained. pH of the solution was maintained at 9 to avoid the formation of calcium deficient apatites. The synthesised samples show XRD patterns corresponding to hydroxyapatite. The wet chemical process without microwave irradiation resulted in rod shaped HA particles of size 101 nm, whereas microwave irradiation of the solution after reaction also resulted in rod shaped HA but the particle size was only 68 nm as evidenced from XRD analyses. The TEM analyses reveal average aspect ratios of 3.37 ± 1.28 and 5.98 ± 2.28 for methods without and with microwave irradiation respectively.

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Natural bioceramics: from coral to bone and beyond

Cited by 208 publications

References 16 publications

Effect of the calcination temperature on the composition and microstructure of hydroxyapatite derived from human and animal bone

Effect of the calcination temperature on the composition and microstructure of hydroxyapatite derived from human and animal bone

Biomaterials from beer manufacture waste for bone growth scaffolds

Synthesis and characterisation of nanocrystalline hydroxyapatite from sea shells

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