Calcium hydroxyapatite can be a significant component of black pigment gallstones. Diverse molecules that bind calcium phosphate inhibit hydroxyapatite precipitation. Because glycine-conjugated bile acids, but not their taurine counterparts, bind calcium phosphate, we studied whether glycochenodeoxycholic acid inhibits calcium hydroxyapatite formation. Glycochenodeoxycholic acid (2 mM) totally ...

Extracellular matrix proteins play key roles in controlling the activities of osteoblasts and osteoclasts in bone remodeling. These bone-specific extracellular matrix proteins contain amino acid sequences that mediate cell adhesion, and many of the bone-specific matrix proteins also contain acidic domains that interact with the mineral surface and may orient the signaling domains. Here we repor...

Nanocrystalline hydroxyapatite assembled hollow fibers (NHAHF) in the membrane form were fabricated by combining the electrospinning technique and the hydrothermal method. This novel hierarchical tubular structure of hydroxyapatite exhibited excellent protein loading capacity and long-term sustained release property.

Hydroxyapatite coatings were deposited for 1, 2, and 3 h on NiTi substrates using plasma-assisted radio frequency sputtering. The matrix consisted of B2 B19’ phases Ti2Ni, Ni3Ti, Ni4Ti3 intermetallic compounds. surface coating was monoclinic hydroxyapatite. Increasing the deposition time to made it possible form a dense hydroxyapatite layer without visible defects. phase contrast maps showed th...

Aims: To document the long term experience of bone derived hydroxyapatite orbital implants and compare results using scleral wrapped implants with those not using sclera. Methods: This retrospective case series reviewed the long term follow up of 118 patients with 120 eyes which had undergone enucleation and bone derived hydroxyapatite orbital implant insertion at Dunedin Hospital from 1977 unt...

Recently, interest in electrochemical formation of hydroxyapatite has evolved. In this work, highly crystalline hydroxyapatite is electrodeposited on pure titanium and Ti-6Al-4V alloy. In situ and ex situ imaging, coupled with potentiostatic and potentiodynamic measurements, is conducted by means of electrochemical atomic force microscopy. This allows for a study of the nucleation and growth of...

The Unit csity of VMiclhigan ,School of Dentistry, Anne Arbor, Michigan 48109 J Dent Res 58(6):1566-1569, June 1979 Synithetic bytdroxyapatite is often used for simulationi studies of adsorption of Streptoc occus min tans andic other oral bacteria. F ffects of chIemical treatniienitS of l ydro xvapatites on the adsorption of S. mutanis iasve been reported (O'Brien ct al., J Dent Rse Sept 1978; ...

OBJECTIVE To determine the incidence of postoperative rotation of flattened hydroxyapatite enucleation implants. METHODS A retrospective review of patients receiving flattened hydroxyapatite enucleation implants was performed to determine the incidence and severity of postoperative implant misalignment. RESULTS Flattened hydroxyapatite implants had been placed in 16 patients. Five were note...

Background: Tissue engineering using Stem cell from Human Exfoliated Deciduous Teeth (SHED) and a natural biomaterials biomaterial scaffold has become a promising therapy for the alveolar bone defect. The aim of this study was to analyze the Osteoprotegerin (OPG) and Receptor Activator of NF-Κb ligand (RANKL) expression after the application of Hydroxyapatite scaffold and SHED.Methods: A labora...