X-ray diffraction and infrared spectroscopy analyses on the crystallinity of engineered biological hydroxyapatite for medical application

Poralan, G M; Gambe, Jess; Alcantara, E M; Vequizo, Reynaldo M.

doi:10.1088/1757-899x/79/1/012028

Cited by 72 publications

(63 citation statements)

References 9 publications

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“…FTIR has been used as a reliable quantitative technique to measure the crystallinity index (a measure of crystal size and perfection) of biological as well as synthetic hydroxyapatite [11,38,39]. For this purpose, the splitting of PO 4 vibration bending mode (515-630 cm and longitudinal optical frequency, has been used as an indication of the hydroxyapatite's crystallinity [11,38,39].…”

Section: Discussionmentioning

confidence: 99%

“…For this purpose, the splitting of PO 4 vibration bending mode (515-630 cm and longitudinal optical frequency, has been used as an indication of the hydroxyapatite's crystallinity [11,38,39]. In amorphous calcium phosphate, due to lattice distortion, PO 4 vibration bending mode is usually seen as a single broad band [39].…”

Section: Discussionmentioning

confidence: 99%

“…Since the crystallinity increases with increasing Ca/P [39], the high crystallinity of NeoMTA Plus could be correlated with its high Ca/P ratio. The mineral composition of hydroxyapatite however has been measured by investigating the CO 3 /PO 4 ratio [11].…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Chemistry and Bioactivity of NeoMTA Plus™ versus MTA Angelus® Root Repair Materials

Zeid

Alamoudi

Khafagi³

et al. 2017

Journal of Spectroscopy

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Objectives. To analyse the chemistry and bioactivity of NeoMTA Plus in comparison with the conventional root repair materials. Method and Materials. Unhydrated and hydrated (initial and final sets) materials were analysed by Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD). For bioactivity study, small holes of dentin discs were filled with either materials, immersed in PBS for 15 days, and analysed with FTIR and scanning electron microscope with energy dispersive X-ray (SEM/EDX). The calculation of crystallinity and carbonate/phosphate (CO 3 /PO 4 ) ratio of surface precipitates (from FTIR) and calcium/phosphate (Ca/P) ratio (from EDX) was statistically analysed using t-test or ANOVA, respectively, at 0.05 significance. Results. Both materials are tricalcium silicate-based that finally react to be calcium silicate hydrate. NeoMTA Plus has relatively high aluminium and sulfur content, with tantalum oxide as an opacifier instead of zirconium oxide in MTA Angelus. NeoMTA Plus showed better apatite formation, higher crystallinity and Ca/P but lower CO 3 /PO 4 ratio than MTA Angelus. SEM showed globular structure with a small particle size in NeoMTA Plus while spherical structure with large particle size in MTA Angelus. Conclusion. Due to fast setting, higher crystallinity, and better bioactivity of NeoMTA Plus, it can be used as a pulp and root repair material.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Chemistry and Bioactivity of NeoMTA Plus™ versus MTA Angelus® Root Repair Materials

Zeid

Alamoudi

Khafagi³

et al. 2017

Journal of Spectroscopy

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“…Therefore, the crystallinity obtained by FT-IR reflected the ionic circumstances. By contrast, the crystallinity obtained by XRD reflected the crystallite size and lattice distortion determined from the FWHM, full width at half maximum of peak 25) . In this study, relative changes in the FWHM were observed.…”

Section: Discussionmentioning

confidence: 95%

Crystallographic Study of the Immature Bovine Incisor Enamel and Dentin

Tamamura

Kôno

Okada

et al. 2016

J. Hard Tissue Biology.

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“…A number of XRD studies on bone crystallinity and crystallite size have been carried, and the differences in crystal size and the FWHM of bone were repeatedly observed 20,[35][36][37][38][39][40][41][42][43] . As for the FWHM, this study disclosed three new findings: i) the FWHM values showed a wide deviation range, ii) a small FWHM value not reported previously, iii) the variation of the FWHM values in the closely neighbouring regions of one small bone mass.…”

Section: X-ray Micro-diffraction (Micro-xrd)mentioning

confidence: 99%

X-ray Micro-Diffraction Analysis Revealed the Crystallite Size Variation in the Neighboring Regions of a Small Bone Mass

Tanaka

Kôno

Okada

et al. 2017

J. Hard Tissue Biology.

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Applying a laboratory used X-ray micro-diffraction technique to analysis of human bone mineral, the variation of crystallite size in a small bone mass was clarified. The mandible cortical small masses were taken off by a bone trephine bar. The micro-XRD patterns showed the broaden peaks, but the full-width at half maximum (FWHM) of the 002 diffraction peak could be obtained. There were three characteristics on the FWHM values obtained in this study. First, the values showed a wide deviation range from 0.44 to 0.66 (2°), indicating the crystallite length of 12.4 nm to 18.5 nm. Second, such a small FWHM value, 0.44, was not reported previously. And third, the variation of FWHM value was observed in the closely neighboring regions within one small bone mass separated within 1 mm only. These results suggested that the crystallites in bone may vary in size from to parts due to bone remodeling and histological textures.

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X-ray diffraction and infrared spectroscopy analyses on the crystallinity of engineered biological hydroxyapatite for medical application

Cited by 72 publications

References 9 publications

Chemistry and Bioactivity of NeoMTA Plus™ versus MTA Angelus® Root Repair Materials

Chemistry and Bioactivity of NeoMTA Plus™ versus MTA Angelus® Root Repair Materials

Crystallographic Study of the Immature Bovine Incisor Enamel and Dentin

X-ray Micro-Diffraction Analysis Revealed the Crystallite Size Variation in the Neighboring Regions of a Small Bone Mass

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