scholarly journals The Development of Non-destructive Analysis for Archaeological Samples Using High Energy Synchrotron Radiation and Laser Electron Photon

RADIOISOTOPES ◽  
2000 ◽  
Vol 49 (3) ◽  
pp. 131-135
Author(s):  
Yasushi SATO ◽  
Masaharu NAKAZAWA
Author(s):  
A. Denker ◽  
J. Opitz-Coutureau ◽  
M. Griesser ◽  
R. Denk ◽  
H. Winter

2015 ◽  
Vol 1088 ◽  
pp. 481-486
Author(s):  
Abdelilah Benmarouane ◽  
Helene Citterio ◽  
Pierre Millet ◽  
Thomas Buslaps ◽  
Alain Lodini ◽  
...  

The properties of the interface between biomaterials and the host tissue play an important role for the process of successful adaptation of implants. Extensive research has focused on shortening the time of osseointegration by modifying the surface in adding a coating such as hydroxyapatite (HAp). We have developed a new type of biocompatible nanohydroxyapatite (n-HAp) coatings, which are characterized before and after deposit on a Ti-6Al-4V substrate using neutron diffraction and scanning electron microscopy. Three months after the implantation in the sheep tibias, high-energy synchrotron radiation (ID15B, ESRF, Grenoble, France) diffraction studies of the cortical bone identify that the c-axes of HAp are preferentially oriented in the direction of the stresses that bone usually withstands. This non destructive analysis of the bone-implant interface proves that bone maturation is achieved successfully with this novel n-HAp coating and demonstrates that the mineralization is completed without spatial organization. None of these findings are obtained with uncoated titanium alloys. The presence of this n-HAp coating on Ti-6Al-4V substrate is decisive in obtaining this mature bone at the interface.


2012 ◽  
Vol 706-709 ◽  
pp. 1661-1666
Author(s):  
Abdelilah Benmarouane ◽  
Pierre Millet ◽  
Thomas Buslaps ◽  
Alain Lodini ◽  
Veijo Honkimäki

The aim of the present study was to study the interface implant-bone by synchrotron radiation, the implant has two faces the first one coated with hydroxyapatite and the second uncoated. In orthopaedic surgery, Titanium (Ti-Al-4V) implants are currently coated with hydroxyapatite (HAp), Ca10(PO4)6(OH)2, in order to obtain a stable and functional direct connection between the bone and the implant. At the implant-bone interface, the new bone reconstituted after two months of implantation must have the same properties like the natural bone in order to accept the implant. Therefore we studied the texture of the reconstituted bone crystals at the interface applying non destructive x-ray diffraction. The required high spatial resolution was achieved utilizing high-energy synchrotron radiation on ID15 at ESRF in Grenoble, France.


10.26879/697 ◽  
2016 ◽  
Vol 19 (3) ◽  
Author(s):  
Yusuke Takeda ◽  
Kazushige Tanabe ◽  
Takenori Sasaki ◽  
Kentaro Uesugi ◽  
Masato Hoshino

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