Chikara Ohtsuki

Mechanism of apatite formation on CaO SiO2P2O5 glasses in a simulated body fluid

Dependence of Apatite Formation on Silica Gel on Its Structure: Effect of Heat Treatment

The prerequisite for glasses and glass‐ceramics to bond to living bone is the formation of biologically active bonelike apatite on their surfaces in the body. Our previous study...

Apatite formation on the surface of ceravital‐type glass‐ceramic in the body

Abstract Previous studies on surface structural changes in vitro as well as in vivo of bioactive A‐W‐type glass‐ceramics and Bioglass‐type glasses showed that the essential cond...

A comparative study of ultrastructures of the interfaces between four kinds of surface‐active ceramic and bone

Abstract The interfaces between four kinds of surfaceactive ceramic and bone were studied by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) using ...

Apatite formation on three kinds of bioactive material at an early stage <i>in vivo</i>: A comparative study by transmission electron microscopy

Abstract Apatite formation on the surface of three kinds of bioactive material at an early stage after implantation in bone was studied using transmission electron microscopy (T...

Bone bonding mechanism of β‐tricalcium phosphate

Abstract It has been proposed that the formation of a surface apatite layer in vivo on surface active ceramics is an essential condition for chemical bonding between ceramics an...

Bioactivity of Na ₂ O‐CaO‐SiO ₂ Glasses

Bioactivities of Na 2 O‐CaO‐SiO 2 glasses were evaluated by examining the formation of bonelike apatite, which is responsible for their bonding to living bone, on their surfaces...

The bonding behavior of calcite to bone

Abstract Plates of calcite (CaCO 3 ) were implanted in rabbit tibiae, and their biocompatibility and bonding ability to bone were studied. The plates were also implanted subfasc...

Transmission Electron Microscopic Observation of Glass-Ceramic A-W and Apatite Layer Formed on Its Surface in a Simulated Body Fluid

In the interior of glass-ceramic A-W, both the apatite and β-wollastonite were homogeneously dispersed in a glassy matrix, taking a form of rice grain 50 nm in width and 100 nm ...