Cooling rate effects on thermal, structural, and microstructural properties of bio‐hydroxyapatite obtained from bovine bone

Ramirez-Gutierrez, C.F.; Palechor-Ocampo, Anderzon F.; Londoño‐Restrepo, Sandra M.; Millán-Malo, Beatríz; Rodríguez‐García, Mario E.

doi:10.1002/jbm.b.33401

Cited by 32 publications

(21 citation statements)

References 10 publications

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“…The physicochemical properties of the isolated phase obtained by incineration depend on variables such as heating rate, annealing temperature, sintering time, cooling, and the atmosphere 6,8,9 . One of them is the crystal size that is commonly determined through X-ray diffraction.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Nano Crystal Size on the X-ray Diffraction Patterns of Biogenic Hydroxyapatite from Human, Bovine, and Porcine Bones

Londoño‐Restrepo

Jeronimo‐Cruz

Millán-Malo

et al. 2019

Sci Rep

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204

101

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This paper focuses on the study of the effect of the change of the crystal size on the shape and width of the X-ray diffraction patterns for defatted and deproteinized bones as well as incinerated biogenic hydroxyapatite obtained from bovine, porcine, and human bones. Inductively Couple Plasma showed the presence of some ions such as Mg, K, Al, Fe, Zn, and Na for all samples. The nanometric size of the crystals was determined through High Resolution Transmission Electron Microscopy in which ordered crystals were found. The calcination of raw clean bones at 720 °C produced a transition of crystal size from nano to micro due to a coalescence phenomenon, this was accompanied by a decrease of the peak width of the X-ray diffraction patterns due to the decrease of the inelastic scattering contribution from the microcrystals. A simulation of the effect of the crystallite size on the shape and width of the X-ray patterns was done using PDF-4 software which confirmed that raw ordered bone crystals produce broad peaks which so far have been erroneously assigned to polycrystalline hydroxyapatite with low crystalline quality.

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Section: Introductionmentioning

confidence: 99%

Effect of the Nano Crystal Size on the X-ray Diffraction Patterns of Biogenic Hydroxyapatite from Human, Bovine, and Porcine Bones

Londoño‐Restrepo

Jeronimo‐Cruz

Millán-Malo

et al. 2019

Sci Rep

Self Cite

204

101

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show abstract

“…The physicochemical characterization of raw bones and BIO‐HAps obtained through different methodologies is still an open problem due to their complexity. Infrared (IR) and Raman spectroscopies have been extensively used to study these materials, monitoring the removal of the organic matrix from the mineral phase, as well as to identify different mineral phases and to identify the changes in the crystalline quality of HAp caused by thermal processes . However, no studies about the influence of the crystal size on the vibrational properties (optical) of synthetic and BIO‐HAps have been reported.…”

Section: Introductionmentioning

confidence: 99%

Effect of the crystal size on the infrared and Raman spectra of bio hydroxyapatite of human, bovine, and porcine bones

Londoño‐Restrepo

Zubieta‐Otero

Jeronimo‐Cruz

et al. 2019

J Raman Spectroscopy

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The optical properties of hydroxyapatites (HAps) and bio HAps have been studied using Raman and infrared (IR) spectroscopies to describe their crystalline quality. However, the size of the HAp crystals and their crystalline order effects have not been considered yet. This paper focuses on the study of the effect of the change in the crystallites size have on the width of the IR and Raman spectra for defatted and deproteinized bones as well as incinerated biogenic HAp obtained from bovine, porcine, and human bones. Bone samples were analyzed through Raman and IR spectroscopies, X‐ray diffraction (XRD), transmission electron microscopy (TEM), inductively coupled plasma (ICP), and scanning electron microscopy (SEM). The Raman and IR spectra for raw samples showed broad bands but, after calcination at 720 °C, became narrow and well defined. TEM images showed that all raw crystallites are ordered nanoplates contrary to the so far well‐established concept that biogenic HAps have low crystalline quality. XRD data confirmed that raw samples display broad peaks that correlated with the HRTEM images of ordered nanocrystals. This fact confirmed that the broad Raman and IR bands of raw clean bones come from nanocrystal plates. SEM analysis confirmed the increase in the crystal size after calcination from nanomicron to submicron dimensions due to a coalescence phenomenon. These results imply that the interpretation of Raman and IR spectra in the case of HAp nanoparticles has been erroneous. These results contribute to the design of biomaterials for tissue engineering based on biogenic HAp for bone regeneration.

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“…Ramirez-Gutierrez et al 102 have studied the effect of coolant on microstructure properties of a bovine bone cooled under air, water, and nitrogen. It was found that cold air has flown away chips, but it has minimum potential to control the temperature elevation.…”

Section: Irrigation Techniquesmentioning

confidence: 99%

Comprehensive analysis on orthopedic drilling: A state-of-the-art review

Jamil

Rafique

Khan

et al. 2020

Proc Inst Mech Eng H

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Bone drilling is a well-known internal fixation procedure to drill a hole, fixing the bone fragments to reduce the susceptibility of permanent paralysis. The success of bone drilling is evaluated based on the extent of osteonecrosis in terms of heat generation, tissue damage, quality of hole, and drilling forces. The appropriate control of cutting conditions, drill geometric parameters, and bone-specific parameters offer bone drilling a viable solution through conventional and non-conventional drilling techniques. The majority of the published research work considers only limited parameters and tries to optimize the drilling parameters and performance measures. However, bone drilling involves numerous conventional and non-conventional drilling parameters and technologies. In order to develop a better understanding of all the studied parameters and performance measures, there is a dire need to develop a framework. The key objective of this review study is to establish a hierarchy of the framework by collecting almost all the parameters studied until now and addressed the relationship between parameters and performance measures to diminish the controversies in the published literature. Therefore, this framework is novel in nature, organizing all the parameters, performance measures, logical comparisons, and limitations of studies. This holistic review can help medical surgeons and design engineers to understand the complicated relationship among parameters and performance measures associated with this state-of-art technologies. Also, modeling, simulations, and optimization techniques are included to explore the application of such techniques in recent advancements in orthopedic drilling.

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Cooling rate effects on thermal, structural, and microstructural properties of bio‐hydroxyapatite obtained from bovine bone

Cited by 32 publications

References 10 publications

Effect of the Nano Crystal Size on the X-ray Diffraction Patterns of Biogenic Hydroxyapatite from Human, Bovine, and Porcine Bones

Effect of the Nano Crystal Size on the X-ray Diffraction Patterns of Biogenic Hydroxyapatite from Human, Bovine, and Porcine Bones

Effect of the crystal size on the infrared and Raman spectra of bio hydroxyapatite of human, bovine, and porcine bones

Comprehensive analysis on orthopedic drilling: A state-of-the-art review

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