Bioactivity of Calcium Aluminate Endodontic Cement
The authors observed that MTA cement release more ions calcium promoting a higher pH in comparison with the experimental calcium aluminate based-cement. Such fact resulted in calcium phosphate
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Evaluation of Two Highly Porous Microcrystalline Biphasic
A biphasic bone grafting biomaterial based on a mixture of calcium phosphates and beta-tricalcium phosphate (β-TCP) phases with high nanoporosity was synthesized. The synthesis route was based on calcium phosphate composition and the incorporation of glycolic acid as a pore former giving a material composed of 97 β-TCP and 3 calcium orthophosphates (CaPO4).
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Porosity prediction of calcium phosphate cements based on
The porosity of calcium phosphate cements has an impact on several important parameters such as strength resorbability and bioactivity. A model to predict the porosity for biomedical cements would hence be a useful tool. At the moment such a model only exists for Portland cements. The aim of this study was to develop and validate a first porosity prediction model for calcium phosphate cements.
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In vitro Bioactivity Assessment of Novel Composites Based
The effect of pseudowollastonite (Pw) additions on the in vitro bioactivity and compressive strength of composites based on calcium aluminate cement (CAC) was studied. Composites were prepared by mixing calcium aluminate clinker with pseudowollastonite (5 and 10 wt ) at a w/c ratio of 0.4 (0.015M LiCl aqueous solution).
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An in vitro evaluation of the Ca/P ratio for the
An in vitro evaluation of the Ca/P ratio for the cytocompatibility of nano-to-micron particulate calcium phosphates for bone regeneration Calcium phosphate based bioceramics have been widely used for orthopedic applications due to their chemical similarity to natural bone.
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Impact of calcium aluminate cement with additives on
Calcium aluminate-based cement (CAC) represents a promising alternative since it exhibits favorable physicochemical characteristics such as its thermal coefficient of and chemical composition similar to the tooth and human bone 9but also due to the bioactivity i. e. its ability to form a biologically active apatite layer upon exposure to
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Comparative evaluation of calcium phosphate‑based
Srivastava S. Comparative evaluation of calcium phosphate‑based varnish and resin‑modified glass ionomer‑based varnish in reducing dentinal hypersensitivity A randomized controlled clinical trial. Eur J Dent 201711 491‑5. DOI 10.4103/ejd.ejd_127_17 This is an open access article distributed under the terms of the Creative
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Calcium Phosphate Solubility The Need for Re-Evaluation
The determination of the solubility of calcium phosphates by the conventional large excess of solid method has been demonstrated to be inappropriate. The problem lies in incongruent dissolution leading to phase transformations and lack of detailed solution equilibria all calculations have been based on simplifications which are only crudely approximate. The absolute solid-titration
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Porosity prediction of calcium phosphate cements based on
The porosity of calcium phosphate cements has an impact on several important parameters such as strength resorbability and bioactivity. A model to predict the porosity for biomedical cements would hence be a useful tool. At the moment such a model only exists for Portland cements. The aim of this study was to develop and validate a first porosity prediction model for calcium phosphate cements.
Get Price
In vitro Bioactivity Assessment of Novel Composites Based
The effect of pseudowollastonite (Pw) additions on the in vitro bioactivity and compressive strength of composites based on calcium aluminate cement (CAC) was studied. Composites were prepared by mixing calcium aluminate clinker with pseudowollastonite (5 and 10 wt ) at a w/c ratio of 0.4 (0.015M LiCl aqueous solution).
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A Review of Luting AgentsHindawi
The cement is a water-based hybrid composition comprising of calcium aluminate and glass ionomer components that is mixed with distilled water. The material has been demonstrated to be bioactive . The setting mechanism of Ceramir C B is a combination of a glass ionomer reaction and an acid-base reaction of the type occurring in hydraulic cements.
Get PriceIn vitro evaluation of the sealing ability of newly
In vitro evaluation of the sealing ability of newly developed calcium phosphate-based root canal sealer. Yang SE(1) Baek SH Lee W Kum KY Bae KS. Author information (1)Department of Conservative Dentistry and Dental Research Institute College of Dentistry Seoul National University Seoul Korea.
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In vitro evaluation of the sealing ability of newly
In vitro evaluation of the sealing ability of newly developed calcium phosphate-based root canal sealer. Yang SE(1) Baek SH Lee W Kum KY Bae KS. Author information (1)Department of Conservative Dentistry and Dental Research Institute College of Dentistry Seoul National University Seoul Korea.
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CCI Chemical Laboratory Bench Top Test Rev 0.
3.3 Trisodium Phosphate (TSP) 5 3.4 Sodium Aluminate 6 3.5 Calcium Chloride 7 3.6 Sodium Silicate 7 4. Laboratory Bench Test 9 4.1 Chemical Assays 9 4.2 Preliminary Debris Tests 9 4.3 Mixing Test 10 4.4 Additional Mixing Test with Debris 13 4.5 Analysis of Stone Flour 15 4.6 Determination of Boron Content in Boric Acid 15
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Calcium aluminate cements as an effective matrix for
Calcium aluminate cements as an effective matrix for owing to the acid-base reaction between acidic phosphate and calcium aluminate ce ment that yields a of the sludge constituents.This work is dealt with the encapsulation of two different automotive phosphate coating sludges in CAC-based mortars.
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Comparative evaluation of different calcium phosphate
Apr 01 2013 · Objective Granule‐shaped calcium phosphate‐based bone graft materials are often required for bone regeneration especially in implant dentistry. Two newly developed bone graft materials are Ceracell® an open‐celled highly porous bioceramic from β‐tricalcium phosphate (β‐TCP) under addition of bioglass and Osseolive® an open porous glass ceramic with the general formula Ca2KNa
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Bioactivity of Calcium Aluminate Endodontic Cement
The authors observed that MTA cement release more ions calcium promoting a higher pH in comparison with the experimental calcium aluminate based-cement. Such fact resulted in calcium phosphate
Get Price
Evaluation of a porosity measurement method for wet
The porosity of a calcium phosphate cement is a key parameter as it affects several important properties of the cement. However a successful non-destructive porosity measurement method that does not include drying has not yet been reported for calcium phosphate cements.
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Evaluation of Two Highly Porous Microcrystalline Biphasic
A biphasic bone grafting biomaterial based on a mixture of calcium phosphates and beta-tricalcium phosphate (β-TCP) phases with high nanoporosity was synthesized. The synthesis route was based on calcium phosphate composition and the incorporation of glycolic acid as a pore former giving a material composed of 97 β-TCP and 3 calcium orthophosphates (CaPO4).
Get PriceEvaluation of Two Highly Porous Microcrystalline Biphasic
A biphasic bone grafting biomaterial based on a mixture of calcium phosphates and beta-tricalcium phosphate (β-TCP) phases with high nanoporosity was synthesized. The synthesis route was based on calcium phosphate composition and the incorporation of glycolic acid as a pore former giving a material composed of 97 β-TCP and 3 calcium orthophosphates (CaPO4).
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Figure 6 from Bioactive calcium phosphate–based glasses
Figure 6. Examples of biomedical applications of CaP based materials (e.g. -tricalcium phosphate dicalcium phosphate dicalcium phosphate dehydrate tricalcium phosphate and calcium apatite) used in form of coating for hip prostheses and dental screws porous bone graft bone cements and pastes. Adapted with permission from Dorozhkin et al.159"Bioactive calcium phosphate–based glasses
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Evaluation of α-Tricalcium Phosphate Cement Obtained at
The calcium phosphate cements (CPCs) based on α-tricalcium phosphate (α-TCP) are highly attractive for use in medicine and odontology since they have similar chemical and phase composition of mineral phase of bones (calcium deficient hydroxyapatite (CDHA)). However one of the biggest difficulties for use of this type of cement is its low mechanical strength due to the presence of
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Characterization of Calcium Aluminate Cement Phases when
Calcium aluminate-based cement (CAC) has already been studied for biomedical applications as endodontics2-6. This material presented good physical and mechanical properties7 biocompatibility8 9 and acted as a chemical and mechanical barrier against bacterial microleakage 4. This sort of cement
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Renal Control of Calcium Phosphate and Magnesium
Calcium phosphate and magnesium are multivalent cations that are important for many biologic and cellular functions. The kidneys play a central role in the homeostasis of these ions. Gastrointestinal absorption is balanced by renal excretion. When body stores of these ions decline significantly gastrointestinal absorption bone resorption and renal tubular reabsorption increase to
Get PriceCharacterization of Calcium Aluminate Cement Phases when
Calcium aluminate-based cement (CAC) has already been studied for biomedical applications as endodontics2-6. This material presented good physical and mechanical properties7 biocompatibility8 9 and acted as a chemical and mechanical barrier against bacterial microleakage 4. This sort of cement
Get PriceAn evaluation of methods to determine the porosity of
Apr 25 2014 · Calcium phosphate cements (CPCs) have been studied since the early 1980s 1 2 and there is still plenty of ongoing research within this area. Since these cements are very similar to the mineral phase of bone they have a high biocompatibility.
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