アブストラクト（38巻2号：The Bulletin of Kanagawa Dental College）

The Bulletin of Kanagawa Dental College

English

Title　： Surface Mechanical Properties of Ti-Ca-P-O Film on Titanium Plate
Subtitle　：
Authors　： Akira Watazu1),2), Katsuhiko Kimoto2), Tsutomu Sonoda1), Atsushi Kuwabara2), Naobumi Saito1)
Authors（kana）　：
Organization　： 1)National Institute of Advanced Industrial Science and Technology (AIST), 2)Division of Fixed Prosthodontics, Department of Oral & Maxillofacial Rehabilitation, Kanagawa Dental College
Journal　： The Bulletin of Kanagawa Dental College
Volume　： 38
Number　： 2
Page　： 59-62
Year/Month　： 2010 / 9
Article　： Original article
Publisher　： Kanagawa Odontological Society
Abstract　： [Abstract] Titanium's biocompatibility, mechanical properties, and osseointegration that enable fixing within a bone bed by direct attachment to living bone recommend it for use in biomedical devices and implants, Calcium phosphate ceramics such as those made from hydroxyl apatite (HA) also feature excellent biocompatibility, however, due to their poor mechanical properties, HA ceramics are unsuited for use in implants where there is intensive tensile stress. Therefore, it was hoped that a Ti-Ca-P-O composite coating would produce a surface that featured excellent mechanical properties, such as high tensile strength, strong adhesive properties, and low frictional resistance. In this study, Ta-Ca-P film was deposited uniformly on commercial pure (cp) titanium plates using a dual target RF magnetron sputtering apparatus with a DC magnetron sputtering system under the conditions of 50 W DC power onto a cp titanium target and under 200 W RF power onto a β-tricalcium phosphate (β-TCP) target for 60 mins in 2.2x10-1 Pa Ar. The crystal structure of the film was amorphous. The film thickness was approximately 0.1μm. The chemical composition of the film revealed a Ti:Ca:P:O ratio of approximately 3:1.7:1:11.The surface of the resulting samples was smooth and mirror-like, and their Color was metallic, identical to cp titanium plate in appearance. In comparison with a Ti plate with no Ti-Ca-P-O film, the surface of a Ti plate coated with Ti-Ca-P-O featured high tensile strength and low frictional resistance. The film coating and the method are expected to see useful application in remodeling the surfaces of various biomedical devices and implants.
Practice　： Dentistry
Keywords　： Titanium, Implants, Hydroxyl apatite (HA), DC magnetron sputtering