1 edition of Properties of some phosphate cements found in the catalog.
Written in English
|The Physical Object|
|Pagination||23 leaves :|
|Number of Pages||23|
Calcium phosphate cements (CPCs) were proposed by Brown and Chow  and LeGeros et al.  in the , the first CPC was used commercially in the treatment of maxillofacial defects and fractures [3, 4, 5].CPCs consist of a combination of one or more calcium orthophosphate powders in which a liquid phase, usually water or an aqueous solution, is added, allowing it to be set and. These calcium phosphate cement pastes can be injected using minimally invasive surgery and adapt to the shape of the defect, resulting in an entangled network of calcium phosphate crystals. Adding an organic phase to the calcium phosphate cement formulation is a very powerful strategy to enhance some of the properties of these materials.
The last chapter of this book provides brief description of utilization of apatites and phosphorus-bearing compounds in industry and material science research. Since the chemistry of phosphorus is quite complicated and a quickly developing field of science, the topics described below are only limited insights to chemically bonded ceramics and refractories, dental phosphate cements, oil . This paper reviews recent studies on self-setting calcium phosphate cements (CPC). Discussions are focused on the cement setting reactions, the products formed, those properties of the cements that contribute to their clinical efficacy, and areas of future improvements that could make CPC useful in a wider range of applications.
Title:Recent Developments on Injectable Calcium Phosphate Bone Cement VOLUME: 9 ISSUE: 2 Author(s):Sufiamie Hablee, Nurul N. Razali, Asep S.F. Alqap and Iis Sopyan Affiliation:Department of Manufacturing and Materials Engineering, Kulliyyah of Engineering, International Islamic University Malaysia, P.O. Kuala Lumpur Keywords:Biological properties, bone cement, calcium phosphate. Four main groups of dental materials have been used for crown cementation for many years, namely glass ionomer cement, zinc phosphate cement, resin cement, and polycarboxylate cement. Each type of cement has its own advantages and drawbacks. Zinc phosphate cement is one of the most popular cements, which has been in use for many years.
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Purpose: Calcium phosphate cement is a bioactive and biodegradable grafting material in the form of powder and liquid, which when mixed, sets as primarily hydroxyapatite, sometimes mixed with unreacted particles and other phases.
This material has been extensively investigated due to its excellent biological properties, potential resorbability, molding capabilities, and easy by: Wilson and Nicholson [ 10] have provided a thorough discussion on the properties of commercial zinc phosphate cements that contain either magnesium oxide or aluminum oxide.
The compressive and tensile strengths of cements are in the range 69– MPa (10,−18, psi) and − MPa (– psi) respectively. This study investigates the effect of wollastonite on the hydration and properties of magnesium potassium phosphate (MKP) cements.
In MKP cements some efflorescence can occur; the presence of wollastonite suppresses efflorescence as the formation of Mg 2 KH(PO 4) 2 15H 2 O is prevented. The presence of wollastonite leads also to more heat (per g of MKP cement) due to the Cited by: 1. A novel magnesium-iron phosphate cement was prepared by incorporating Fe 2 O 3 powder.
The properties of MPC were improved with the addition of Fe 2 O 3 powder. Fe 2 O 3 enhanced the crystallization of struvite and formed some new hydrates in MPC. High curing temperature promoted the reaction between Fe 2 O 3 and : Yuantao Liu, Bing Chen, Zhaohui Qin, Dong Pen, M.
Aminul Haque. Mechanical properties The mechanical properties of calcium phosphate cements depend on two conditions: (a) the precipitate should grow in the form of clusters of crystals which have a high degree of rigidity, (b) the morphology of the crystals should enable entanglement of the by: 1.
Magnesium phosphate cements (MPCs) have been extensively used as fast setting repair cements in civil engineering. They have properties that are also relevant to biomedical applications, such as fast setting, early strength acquisition and adhesive properties.
Cement systems composed of tetracalcium phosphate powder or powder mixtures of tetracalcium phosphate and brushite were investigated. The liquid components for making the cements. Cement production. α‐TCP‐CPC was formulated from a powder phase of ∼94% α‐TCP (produced in‐house according to Jack et al) and a liquid phase of 5 wt % Na 2 HPO 4 in deionized water at a liquid‐to‐powder ratio of mL/g.
The powder and liquid components were mixed for 1 min, delivered into a polytetrafluoroethylene (PTFE) (RS Components, Northamptonshire, UK) mold within 4. Magnesia Cements: From Formulation to Application explores the latest developments in this exciting area, reviewing the unique properties offered by these cements, including superior strength, fire resistance, and exceptional ability to bond to a wide range of aggregates, and highlighting their potential role in making cement production and.
The composition of cement is varied depending on the application. A typical example of cement contains 50–70% C3S, 15–30% C2S, 5–10% C3A, 5–15% C4AF, and 3–8% other additives or minerals (such as oxides of calcium and magnesium). Abstract: The Magnesium phosphate cement was prepared from MgO and NH 4 H 2 PO changes of the strength, appearance and hydration products of the magnesium phosphate cement were investigated, which are soaked in sulfuric acid solution, sodium hydroxide solution, sodium sulfate solution and magnesium sulfate solution.
Mixture of magnesium oxide with either silica fume or phosphate were prepared in this research. The workability, mechanical properties and the microstructure of the two magnesium based binder were examined.
Compressive strength tests showed that the magnesium phosphate cement (MPC) gained early strength much faster than magnesium silica hydrate cement (MSH) but the MSH system. Abstract This paper reviews recent studies on self-setting calcium phosphate cements (CPC).
Discussions are focused on the cement setting reactions, the products formed, those properties of the cements that contribute to their clinical efficacy, and areas of future improvements that could make CPC useful in a wider range of applications.
Biphasic calcium phosphate bioceramics composed of hydroxyapatite (HA) and β-tricalcium phosphate (β-TCP) have relevant properties as synthetic bone grafts, such as tunable resorption, bioactivity, and intrinsic osteoinduction.
However, they have some limitations associated to their condition of high-temperature ceramics. In book: Orthopaedic Bone Cements, pp is a very powerful strategy to enhance some of the properties of these materials. been used to enhance specific calcium phosphate cement. Calcium phosphate cements (CPCs) are frequently used to repair bone defects.
Since their discovery in the s, extensive research has been conducted to improve their properties. Acid-base cements have been known since the mid-nineteenth century and offer an alternative to polymerization as a route for forming solid substances.
They are quick setting materials and some have unusual properties for cements, such as adhesion and translucency. They find diverse applications ranging from the biomedical to the industrial.5/5(1).
After a basic introduction the book explores the various components of these materials and their properties. the hardening processes of some calcium phosphate cements (CPCs) used as bone.
At no time should the amount of liquid be increased, as it will adversely affect the compressive strength, which at 55 MPa is already lower than that of zinc phosphate cement.
Biological properties of polycarboxylate cement are quite favorable and the cement causes little or no irritation to the pulp, even at a remaining dentin thickness of Variation of shift factor, aT, with test temperature, T, and the fit between the Williams-Landel-Ferry (WLF) equation and the experimental results, for a poly (ethyl methacrylate) bone cement.
Search the information of the editorial board members by name. Development and characterization of α-tricalcium phosphate/monocalcium aluminate composite bone cement.
Loreley Morejón-Alonso, Raúl García Carrodeguas, Luis Alberto dos Santos. Journal of Biomedical Science and Engineering Vol.5 No.8，J DOI: /jbise 5, Downloads 9, Views Citations.Zinc Phosphate Cements. Zinc phosphate was the very first dental cement to appear on the dental marketplace and is seen as the “standard” for other dental cements to be compared to.
The many uses of this cement include permanent cementation of crowns, orthodontic appliances, intraoral splints, inlays, post systems, and fixed partial dentures.In the early days of resin-based cements, results of some studies showed that resin cements exhibited higher film thickness compared with the zinc phosphate cements .
White et al. [ 4 ] found in their study that some resin-based cements did not meet ADA specifications which have a maximal film thickness of 25µm whereas these samples.