نتایج جستجو برای: nanohydroxyapatite

تعداد نتایج: 314  

2015
Sai Santosh Babu Komakula Snehal Raut Nitin Pratap Verma T. Avinash Raj Mahesh J. Kumar Arvind Sinha Shashi Singh

Pressing need for utilization of injectables/fillers in various forms of orthopaedic treatments/surgeries commands an equal demand for better graft material. Injectable bone graft material based on biomimetically synthesized nanohydroxyapatite was developed and subjected to ball milling for different times; three materials thus produced were evaluated for their biological properties. The three ...

Journal: :Analytical and bioanalytical chemistry 2014
Jing Jia Shujuan Liu Hongdeng Qiu Yong Guo Xia Liu Shengxiang Jiang

In this paper, a simple and versatile route was introduced to prepare solid-phase microextraction coatings on the chemically inert titanium wire. Titania nanotube array film can be created on metallic substrates by electrochemical anodization in fluoride-containing electrolytes and subsequently support various secondary reactions to prepare functional surfaces. In the present work, titania nano...

Journal: :Colloids and surfaces. B, Biointerfaces 2015
J Barros L Grenho M H Fernandes C M Manuel L F Melo O C Nunes F J Monteiro M P Ferraz

Nanohydroxyapatite possesses exceptional biocompatibility and bioactivity regarding bone cells and tissues, justifying its use as a coating material or as a bone substitute. Unfortunately, this feature may also encourage bacterial adhesion and biofilm formation. Surface functionalization with antimicrobials is a promising strategy to reduce the likelihood of bacterial infestation and colonizati...

Journal: :Journal of biomedical materials research. Part A 2008
Alis Yovana Pataquiva Mateus Cristina C Barrias Cristina Ribeiro Maria P Ferraz Fernando J Monteiro

This study concerns the preparation, physical, and in vitro characterization of two different types of hydroxyapatite (HA) microspheres, which are intended to be used as drug-delivery systems and bone-regeneration matrices. Hydroxyapatite nanoparticles (HA-1 and HA-2) were prepared using the chemical precipitation synthesis with H(3)PO(4), Ca(OH)(2), and a surfactant, SDS (sodium dodecyl sulfat...

Journal: :The journal of contemporary dental practice 2017
Yasmin Sb de Lima Gomes Larissa D Alexandrino Cristiane de M Alencar Eliane B Alves Kelson Cf Faial Cecy M Silva

AIM Evaluate in situ the effect of nanohydroxyapatite paste (nano-HAP) before bleaching with hydrogen peroxide 35% (HP35%) by ion chromatography (IC) Knoop hardness number (KHN) and tristimulus colorimetry (TC). MATERIALS AND METHODS A total of 60 fragments were obtained from third molars included (3 mm × 3 mm × 3 mm) and the specimens were divided into three groups (n = 20): Gas chromatograp...

Journal: :Ultrasonics sonochemistry 2009
Gérard Eddy Poinern Ravi Krishna Brundavanam Nicholas Mondinos Zhong-Tao Jiang

Nanostructured hydroxyapatite (HAP) was prepared by a wet precipitation method using Ca(NO(3)) and KH(2)PO(4) as the main material and NH(3) as the precipitator under ultrasonic irradiation. The Ca/P ratio was set at 1.67 and the pH maintained at a minimum of 9. The temperature conditions and ultrasound influences were investigated using X-ray diffraction (XRD), field emission scanning electron...

2016
MADALINA GEORGIANA ALBU ADRIANA LUNGU

The aim of this study was to synthetize porous three-dimensional composites, similar with natural bone structure, for using it in tissue engineering. The new composites prepared by freeze-drying of composite gels consist of a mineral phase nanohydroxyapatite and an organic phase type I fibrillar collagen and silk sericin, the latter acting as a glue-like protein that serves as an adhesive, for ...

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