The effect of growth conditions and post treatments on the properties calcium phosphate films electrodeposited by a potentiostat authors’ design construction is presented. electrolyte used was formed with 0.025 M (NH4)H2PO4 0.042 Ca(NO3)2.4H2O, its pH kept at 5. A voltametric analysis performed to determine necessary potential values obtain films. Additionally, temperature varied influence depo...

The electrolysis method for synthesizing hydroxyapatite nanoparticles (NPs) has the advantage of controlling particle size by adjusting potential and current used. This study aims to NPs formation its characteristics. solution contained Na2H2EDTA.2H2O, KH2PO4, CaCl2, with an EDTA/PO43-/Ca2+ concentration 0.2/0.2/0.2 M. electrolytic are 4, 5, 6 volts hours. carbon electrode spacing used is 2 cm....

Calcium phosphate cements have been in clinical use for the last 10 years. Their most salient features include good biocompatibility, excellent bioactivity, self-setting characteristics, low setting temperature, adequate stiffness, and easy shaping to accomodate any complicated geometry. They are commonly used in filling bone defects and trauma surgeries as mouldable paste-like bone substitute ...

Human bone mineral, brushite (BRU) and synthetic apatites: hydroxyapatite hydrated (HAh), hydroxyapatite calcined (HAc) and carbonatoapatite of type B with 9 wt% of CO3 2(CHA-B), were studied by variable-contact time experiments using conventional crosspolarization (CP) and CP preceded by additional proton spin lock. The CP kinetics, that is the dependence of CP intensity on the contact time, w...

This thesis investigates the application of a low power solid state NMR technique, using proton to phosphorus-31 cross polarization via adiabatic demagnetization in the rotating frame (ADRF-CP), to study samples of synthetic calcium phosphate and bone mineral. The first section describes the use of ADRF-CP, with a surface coil, to detect monohydrogen phosphate ions in the presence of a large ba...