In early 1980s, researchers discovered self-setting calcium orthophosphate cements, which are a bioactive and biodegradable grafting material in the form of a powder and a liquid. Both phases after mixing form a viscous paste that after being implanted sets and hardens within the body as either a non-stoichiometric calcium deficient hydroxyapatite (CDHA) or brushite, sometimes blended with un-r...

The genesis and evolution of acrylic bone cement. Otto Röhm is known as the developer of polymethylmethacrylate PMMA in 1901. Preparation and Characterization of Injectable Brushite. Filled-Poly Methyl Methacrylate Bone Cement. Rodriguez 1, Jonathan Chari.Bone cement implantation syndrome. 1Department of Anaesthesia, University Hospital of. Problems with modern bone cements such as the loosenin...

Urolithiasis or the formation of calculi at any level urinary tract is a common disorder found throughout world. Brushite minerals, probably initiator stone under favorable physiological environment, are one most commonly occurring stones along with calcium oxalate mono and di-hydrates. An attempt was made to know effectiveness methanolic extract Chrysopogon zizanioides L. (Vetiver) roots on gr...

Glycosaminoglycan constituents of the periodontium have been detected in supragingival and subgingival dental calculus. They are polyanionic heteropolysaccharides containing -COOH and SO3H residues. The non-sulfated hyaluronan is present in supragingival calculus, whereas chondroitin sulfate, dermatan sulfate, and heparan sulfate are detected in subgingival calculus. They are implicated in both...

Urolithiasis is a common disease worldwide, but its causes are still not well understood. In many cases, crystalluria provides an early indication of urinary stone formation, and characterisation the deposits could help doctors to take preventative measures stop their further growth. Nowadays, gold standard for analysis optical microscopy, morphology-based information it can often be unreliable...

The biomineral calcium hydrogen phosphate dihydrate (CaHPO(4).2H(2)O), known as brushite, is a malleable material that both grows and dissolves faster than most other calcium minerals, including other calcium phosphate phases, calcium carbonates and calcium oxalates. Within the body, this ready formation and dissolution can play a role in certain diseases, such as kidney stone and plaque format...

The two-stage process of the calcium phosphate layer deposition – the plate-like brushite particles electrochemically deposited in the first stage and electrophoretically coated by the hydroxyapatite layer in the second stage – on titanium substrate was studied in this paper. The results showed that compact calcium phosphate layers of different thickness, roughness and morphology can be prepare...

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...