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Showing 1 to 17 of 17 for “"Amorphous Calcium Phosphate"”.
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Amorphous calcium phosphate nanocomplexes in dental film formulations
… present thesis concerns the exploration of novel amorphous calcium phosphate nanocomplexes stabilised by food grade additives. The concept is to generate a formulation to prevent dental caries through enamel remineralisation, supplementing the calcium and phosphate concentrations by delivery from …
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Amorphous calcium phosphate nanoparticles for biomedical cargo delivery
… This thesis presents a potential approach, using amorphous calcium phosphate (ACP) nanoparticles as carriers of organic cargo. ACP is widely used as an in vitro delivery vehicle but similar in vivo use has not been realised. This PhD encompasses development of a practical synthetic route to stable …
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Osteoblast Response to Zirconia-Hybridized Pyrophosphate Stabilized Amorphous Calcium Phosphate
… sites in vivo. Hydroxyapatite (HAP) and μ-tricalcium phosphate (μ-TCP) ceramics have been incorporated into PLGA bone scaffolds and have been shown to increase their osteoconductivity (support cell attachment). Although HAP, μ-TCP, and biodegradable polyesters are osteoconductive, there is no …
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Effect of prophylaxis pastes containing amorphous calcium phosphate and fluoride on enamel bond strength.
Effect of prophylaxis pastes containing amorphous calcium phosphate and fluoride on enamel bond strength.
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White spot lesion regression using casein phosphopeptide amorphous calcium phosphate complexes alone or combined with microabrasion.
… treatment with casein phosphopeptides (CPP) and amorphous calcium phosphate (ACP). The aim of this study was to test the null hypothesis that the treatment of WSLs with CPP-ACP complexes produces no difference in the outcome of WSL regression when compared to controls regardless of whether or not …
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Effectiveness of Resin Infiltration and Mi Paste Cpp-Acp in Masking White Spot Lesions
… infiltration (RI) and Casein Phosphopeptide Amorphous Calcium Phosphate (CPP-ACP), at improving the light reflectivity and thus the appearance of WSLs using spectrophotometric analysis. Sixty extracted human third molars were partially demineralized to create artificial WSLs and randomly …
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Biological and biomimetic mineralization via protein nanoribbon scaffolds
… NR) are hypothesized to provide the scaffold for amorphous calcium phosphate (ACP) precursor to apatite. From quantitative analysis of ACP nucleation rates on Amel NRs as a function of chemical potential, we see phosphorylated Amel NRs (pAmel NRs) are far more potent calcium phosphate nucleators …
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Investigation of calcium orthophosphate chemical effects in a post-LOCA nuclear reactor containment
Calcium leached from NUKON fiberglass in containment following a Loss of Coolant Accident (LOCA) could lead to the formation of chemical precipitates that in turn cause head-loss increase due to filtering through a fibrous debris accumulation at the sump pump screens. Experiments conducted on the …
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The effect of filler on the mechanical properties of a novel resin-based calcium phosphate cement
Several studies have found that resin-based amorphous calcium phosphate (ACP) composites can function well for applications that do not require high mechanical demand. Milled tricalcium phosphate (TCP), a new calcium-phosphate-releasing material, is crystalline in nature, suggesting it to be …
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Characterizing the mechanism and rate of calcium phosphate precipitation in aerobic granular sludge
… enhancing recovery through the precipitation of calcium phosphate minerals within the granule1–3. A rigorous understanding of precipitation mechanism and rate has been limited by simultaneous biological uptake and release of phosphate and cations. As a result, more work is needed to better …
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Phosphate precipitation as struvite from municipality wastewater
… and an undigested waste activated sludge. High phosphate and nitrogen are released into water during the anaerobic treatment process. High concentrations of these nutrients in the wastewater lead to eutrophication, which is a major environmental problem (Doyle et al., 2000). In view of the above …
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The ion release behaviours and water sorption of novel resin-based calcium phosphate cement
Calcium phosphate-filled restorative materials were developed to provide calcium (Ca) and phosphate (PO4) ions, which have been proposed to enhance remineralization of demineralized tooth structure. Recently, tricalcium phosphate (TCP)-filled restorative materials were introduced as an alternative …
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Chemical Controls on the Formation of Amorphous and Crystalline Calcium Phosphates
Transformation of amorphous calcium phosphate (ACP) and brushite into hydroxylapatite, an important biomineral, has been documented. The relationships between synthesis conditions and the formation and transformation of these phases are not comprehensively understood. The metastable nature of ACP …
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ECO-FRIENDLY HYDROXYAPATITE-BASED MATERIALS AS METAL ADSORBENTS: OPTIMIZATION OF SURFACE PROPERTIES FOR WATER AND WASTEWATER REMEDIATION
… this work is to design and develop tin-modified calcium phosphate-based adsorbents for the removal of Cr(VI). Two distinct synthetic approaches were employed, yielding two different materials: (i) Sn-modified hydroxyapatite (Sn/HAP) – prepared by surface deposition of tin species on preformed …
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Bioactive Poly(Lactic-co-Glycolic Acid)-Calcium Phosphate Scaffolds for Bone Tissue Regeneration
… 3D architectures. Hydroxyapatite (HAP) and tricalcium phosphate have been used in conjunction with polymer scaffolds due to their osteoconductivity and biocompatibility, but they often lack osteoinductivity and are resistant to biodegradation. Conversely, amorphous calcium phosphate (ACP) is a …
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3D scaffolds for tissue engineering produced by microfabrication technology
… Additional chitosan scaffolds filled with amorphous calcium phosphate (ACP) particles were also microfabricated, considering the possibility to take advantage of the osteoconductive character of ACP for bone tissue regeneration applications. The in-house built system utilizes highly …
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Tracking Inorganic Solids in Biological Enhanced Phosphorus Removal Wastewater Treatment Systems
… solids. This includes the formation of polyphosphate by phosphorus accumulating microorganisms (PAOs) and precipitation of inorganic minerals (e.g., struvite). Up until now, the only test that provides information on inorganic settleable or suspended solids (ISS) is the total solids test …