Degradation Behavior of β-Ca&lt;sub&gt;3&lt;/sub&gt; (PO&lt;sub&gt;4&lt;/sub&gt;)&lt;sub&gt;2&lt;/sub&gt;/β-Ca&lt;sub&gt;2&lt;/sub&gt;P&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;7&lt;/sub&gt; Bioceramics

Li, Yuan Yuan; Yang, De An; Zhao, Hong

doi:10.4028/www.scientific.net/kem.336-338.1650

Cited by 4 publications

(4 citation statements)

References 7 publications

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“…The calcium pyrophosphate (CPP, Ca 2 P 2 O 7 ) ceramic is an attractive and prospective object for investigation due to the molar ratio Ca/P = 1 and values of pH close to neutral (pH ~7) during immersion in water [120], which were confirmed by dynamic studies in this direction [120][121][122][123][124][125][126][127].…”

Section: Calcium Pyrophosphate/bioglass 45s5 Compositesmentioning

confidence: 96%

“…The CPP has several polymorphs [70]: amorphous-CPP, which is formed at 240-450 • C; γ-CPP, which is formed at ≈ 530 • C; β-CPP, which is formed at 700-750 • C; and β-CPP, which is transformed into α-CPP at 1140-1179 • C. According to the literature, most research was dedicated to the investigation of amorphous-CPP [122,123], γ-CPP [121], and β-CPP [120,125,126], which are produced by thermal conversion of hydrated ortho-or pyrophosphate calcium [122,123], solid phase synthesis [128], and the firing of brushite cement stone/powders [120,127,129] or monetite [125].…”

Section: Calcium Pyrophosphate/bioglass 45s5 Compositesmentioning

confidence: 99%

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Materials in the Na2O–CaO–SiO2–P2O5 System for Medical Applications

Kaimonov,

Safronova

2023

Materials

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Calcium phosphate materials and materials based on silicon dioxide have been actively studied for more than 50 years due to their high biocompatibility and bioactivity. Hydroxyapatite and tricalcium phosphate are the most known among calcium phosphate materials, and Bioglass 45S5 is the most known material in the Na2O–CaO–SiO2–P2O5 system. Each of these materials has its application limits; however, some of them can be eliminated by obtaining composites based on calcium phosphate and bioglass. In this article, we provide an overview of the role of silicon and its compounds, including Bioglass 45S5, consider calcium phosphate materials, talk about the limits of each material, demonstrate the potential of the composites based on them, and show the other ways of obtaining composite ceramics in the Na2O–CaO–SiO2–P2O5 system.

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Section: Calcium Pyrophosphate/bioglass 45s5 Compositesmentioning

confidence: 96%

Section: Calcium Pyrophosphate/bioglass 45s5 Compositesmentioning

confidence: 99%

Materials in the Na2O–CaO–SiO2–P2O5 System for Medical Applications

Kaimonov,

Safronova

2023

Materials

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“…According to the information from scientific literature ceramics based on β-calcium pyrophosphate or ceramics containing phase of β-calcium pyrophosphate have repeatedly been the subject of investigation dealing with creation of materials for bone defect treatment [9][10][11][12][13]. In all these technics different powder precursors were used.…”

Section: Introductionmentioning

confidence: 99%

“…Different powders and powder mixtures with molar ratio Ca/P = 1 can be used as precursors of high-temperature β-modification of calcium pyrophosphate Ca 2 P 2 O 7 as the ceramic phase. Powders of brushite CaHPO 4 •2H 2 O [9], monetite CaHPO 4 [10], hydrated amorphous calcium pyrophosphate Ca 2 P 2 O 7 •xH 2 O [11,12], calcium pyrophosphate Ca 2 P 2 O 7 in forms of γ or β modifications [13,14], can be used as starting direct powder precursors for β-calcium pyrophosphate β-Ca 2 P 2 O 7 ceramics preparation.…”

Section: Introductionmentioning

confidence: 99%

Bioceramics Based on β-Calcium Pyrophosphate

et al. 2022

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Ceramic samples based on β-calcium pyrophosphate β-Ca2P2O7 were prepared from powders of γ-calcium pyrophosphate γ-Ca2P2O7 with preset molar ratios Ca/P = 1, 0.975 and 0.95 using firing at 900, 1000, and 1100 °C. Calcium lactate pentahydrate Ca(C3H5O3)2⋅5H2O and monocalcium phosphate monohydrate Ca(H2PO4)2⋅H2O were treated in an aqua medium in mechanical activation conditions to prepare powder mixtures with preset molar ratios Ca/P containing calcium hydrophosphates with Ca/P = 1 (precursors of calcium pyrophosphate Ca2P2O7). These powder mixtures containing calcium hydrophosphates with Ca/P = 1 and non-reacted starting salts were heat-treated at 600 °C after drying and disaggregation in acetone. Phase composition of all powder mixtures after heat treatment at 600 °C was presented by γ-calcium pyrophosphate γ-Ca2P2O7 according to the XRD data. The addition of more excess of monocalcium phosphate monohydrate Ca(H2PO4)2·H2O (with appropriate molar ratio of Ca/P = 1) to the mixture of starting components resulted in lower dimensions of γ-calcium pyrophosphate (γ-Ca2P2O7) individual particles. The grain size of ceramics increased both with the growth in firing temperature and with decreasing molar ratio Ca/P of powder mixtures. Calcium polyphosphate (t melt = 984 °C), formed from monocalcium phosphate monohydrate Ca(H2PO4)2⋅H2O, acted similar to a liquid phase sintering additive. It was confirmed by tests in vitro that prepared ceramic materials with preset molar ratios Ca/P = 1, 0.975, and 0.95 and phase composition presented by β-calcium pyrophosphate β-Ca2P2O7 were biocompatible and could maintain bone cells proliferation.

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Transient Implantable Electronics for Postsurgery Preventive Medicine

Mirzajani,

Zolfaghari,

Akbari Nakhjavani

et al. 2024

Adv Funct Materials

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The field of postoperative care has seen a remarkable shift toward the utilization of electronic implantable devices, including sensors, biosensors, stimulators, and drug delivery systems, all designed with a biodegradable form factor and wireless data/power transmission capability. These technologies hold immense potential for postsurgery out‐of‐hospital monitoring during the postdischarged period, where continuous monitoring of physiological signals is lacking. Furthermore, these devices eliminate the need for secondary surgeries required for device retrieval as they can safely degraded in the body, thus enhancing patient recovery. This review delves into the latest advancements in biodegradable implantable devices, examining their application in monitoring vital signs, the innovative wireless communication and powering technologies they employ, and the biodegradable materials that enable their function. The analysis extends to evaluating the efficacy and limitations of these devices across various medical applications. Moreover, it explores future research directions, emphasizing material advancements, device miniaturization, customization, and the integration of artificial intelligence to create closed‐loop therapeutic systems. This comprehensive review underscores the transformative potential of these technologies in enhancing postoperative care and outlines the pathway for future innovations in this dynamic field.

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Degradation Behavior of β-Ca<sub>3</sub> (PO<sub>4</sub>)<sub>2</sub>/β-Ca<sub>2</sub>P<sub>2</sub>O<sub>7</sub> Bioceramics

Cited by 4 publications

References 7 publications

Materials in the Na2O–CaO–SiO2–P2O5 System for Medical Applications

Materials in the Na2O–CaO–SiO2–P2O5 System for Medical Applications

Bioceramics Based on β-Calcium Pyrophosphate

Transient Implantable Electronics for Postsurgery Preventive Medicine

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