Calcium orthophosphates (CaPO 4 ): Occurrence and properties

Dorozhkin, Sergey V.

doi:10.1016/j.morpho.2017.03.007

Cited by 33 publications

(21 citation statements)

References 674 publications

(933 reference statements)

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“…, in the proximity of the 1.55-2.00 range reported elsewhere (Gutiérrez-Salazar and Reyes-Gasga 2003;Arnold and Gaengler 2007;Fagrell et al 2010;Teruel et al 2015;Dorozhkin 2016).…”

supporting

confidence: 67%

“…Furthermore, forming phosphate minerals participated in ion exchange, enabling the incorporation of anions and cations in the structure. For instance, F present in the ancient molar may form some of the secondary precipitates, such as francolite [Ca 5 (PO 4 ,CO 3 ) 3 F], which is commonly found in ancient (Dorozhkin 2016) but not contemporary remains (Patonai et al 2013). Meanwhile, the Zn and Mg present in the ancient molar may be explained by surface fixation.…”

Section: Discussionmentioning

confidence: 99%

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Excellent Preservation of Archaeological, Mercury‐Enriched Dental Remains

et al. 2018

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In this study, we assessed the notable preservation of mercury‐enriched ancient dental remains. The studied specimen belonged to a 30‐year‐old woman, and it was collected from Temple XIII at the archaeological site of Palenque, Mexico (17°29’2.32”N, 92°2’46.78”W; a UNESCO World Heritage Site). The preservation of an ancient molar was studied by high‐resolution scanning electron microscopy and energy‐dispersive X‐ray spectroscopy (HRSEM–EDS), and the obtained results were compared to those recorded for contemporary tooth specimens. Measured and conventional carbon ages for the ancient molar were 1000 ± 30 and 1260 ± 30 bp, respectively. Energy‐dispersive spectroscopy (EDS) analysis showed that the accumulated Hg in the ancient molar was 66% (by weight). In contrast, the Hg content in the contemporary molar was observed to be below the analytical detection limits. Clearly, Hg accumulated preferentially in ancient dental structures. Aging favoured the overall exchange of Hg for structural Ca; namely, chemical migration from one dental compartment to the other, mineral transformations, enamel hypoplasia, and the accumulation of Hg and Al in bio‐organic structures. Overall, we observed excellent preservation of biogenic material with varying physiological function(s), including abundant odontoblasts (tubules and spheres), dentinal tubules and nervous system fibrils.

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“…, in the proximity of the 1.55-2.00 range reported elsewhere (Gutiérrez-Salazar and Reyes-Gasga 2003;Arnold and Gaengler 2007;Fagrell et al 2010;Teruel et al 2015;Dorozhkin 2016).…”

supporting

confidence: 67%

Section: Discussionmentioning

confidence: 99%

Excellent Preservation of Archaeological, Mercury‐Enriched Dental Remains

et al. 2018

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“…Today's trends in medicine and bioengineering indicate that by using active biomaterials, a more prompt, enhanced, and improved healing process will take place without eliciting any adverse immune rejection reactions [1][2][3][4]. Due to its remarkable properties and similarity with the inorganic phase of the bone, hydroxyapatite (HAp), the most known "member" of the CaP family, has been extensively used as both a bulk bioactive ceramic and/or a coating in medical applications [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

In Vitro Activity Assays of Sputtered HAp Coatings with SiC Addition in Various Simulated Biological Fluids

et al. 2019

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Considering the requirements of medical implantable devices, it is pointed out that biomaterials should play a more sophisticated, longer-term role in the customization and optimization of the material–tissue interface in order to ensure the best long-term clinical outcomes. The aim of this contribution was to assess the performance of silicon carbide–hydroxyapatite in various simulated biological fluids (Dulbecco’s modified Eagle’s medium (DMEM), simulated body fluid (SBF), and phosphate buffer solution (PBS)) through immersion assays for 21 days at 37 ± 0.5 °C and to evaluate the electrochemical behavior. The coatings were prepared on Ti6Al4V alloy substrates by magnetron sputtering method using two cathodes made of hydroxyapatite and silicon carbide (SiC). After immersion assays the coating’s surface was analyzed in terms of morphology, chemical and phase composition, and chemical bonds. According to the electrochemical behavior in the media investigated at 37 ± 0.5 °C, SiC addition inhibits the dissolution of the hydroxyapatite in DMEM acellular media. Furthermore, after adding SiC, the slow degradation of hydroxyapatite in PBS and SBF media as well as biomineralization in DMEM were observed.

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“…As described in two excellent review papers [1,2] the term "Apatite" represents a group of minerals of a very wide interest. As a matter of fact, extraction of phosphor from apatite ores provides, to this day, fertilizers to feed the Earth population; apatites are used as well in geological dating techniques and studies of rare earth element variation in rocks.…”

Section: Introductionmentioning

confidence: 99%

About the Genetic Mechanisms of Apatites: A Survey on the Methodological Approaches

2017

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Apatites are properly considered as a strategic material owing to the broad range of their practical uses, primarily biomedical but chemical, pharmaceutical, environmental and geological as well. The apatite group of minerals has been the subject of a huge number of papers, mainly devoted to the mass crystallization of nanosized hydroxyapatite (or carboapatite) as a scaffold for osteoinduction purposes. Many wet and dry methods of synthesis have been proposed. The products have been characterized using various techniques, from the transmission electron microscopy to many spectroscopic methods like IR and Raman. The experimental approach usually found in literature allows getting tailor made micro-and nano-crystals ready to be used in a wide variety of fields. Despite the wide interest in synthesis and characterization, little attention has been paid to the relationships between bulk structure and corresponding surfaces and to the role plaid by surfaces on the mechanisms involved during the early stages of growth of apatites. In order to improve the understanding of their structure and chemical variability, close attention will be focused on the structural complexity of hydroxyapatite (HAp), on the richness of its surfaces and their role in the interaction with the precursor phases, and in growth kinetics and morphology.

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Calcium orthophosphates (CaPO 4 ): Occurrence and properties

Cited by 33 publications

References 674 publications

Excellent Preservation of Archaeological, Mercury‐Enriched Dental Remains

Excellent Preservation of Archaeological, Mercury‐Enriched Dental Remains

In Vitro Activity Assays of Sputtered HAp Coatings with SiC Addition in Various Simulated Biological Fluids

About the Genetic Mechanisms of Apatites: A Survey on the Methodological Approaches

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