アブストラクト（37巻2号：The Bulletin of Kanagawa Dental College）

The Bulletin of Kanagawa Dental College

English

Title　： Characterization of Fluoridated Apatite-Coated Titanium Dioxide Photocatalyst
Subtitle　： ORIGINAL ARTICLES
Authors　： Tomofumi Sawada*1, Tomoji Sawada*2, Yusuke Takahashi*3, Takeshi Shibata*1, Shusaku Okada*4, Noriyuki Hoshi*1, Nobushiro Hamada*3, Toshio Teranaka*4, Katsuhiko Kimoto*1, Minoru Toyoda*2
Authors（kana）　：
Organization　： *1Division of Fixed Prosthodontics, CDepartment of Oral and Maxillofacial Rehabilitation, Kanagawa Dental College, *2Division of Removal Prosthetics, Department of Oral and Maxillofacial Rehabilitation, Kanagawa Dental College, *3Division of Microbiology, Department of Infection Control, Kanagawa Dental College, *4Division of Restorative Dentistry, Department of Oral Medicine, Kanagawa Dental College
Journal　： The Bulletin of Kanagawa Dental College
Volume　： 37
Number　： 2
Page　： 111-116
Year/Month　： 2009 / 9
Article　： Original article
Publisher　： Kanagawa Odontological Society
Abstract　： [Abstract] Fluoridated apatite coated-titanium dioxide (FAp-TiO2), a multifunctional photocatalytic material, was synthesized, and then used to improve the acid resistance of hydroxyapatite-coated TiO2 (HAp-TiO2). Because there is insufficient information available on the photocatalytic effect of FAp-TiO2 in comparison to HAp-TiO2, the characterization of FAp-TiO2 has not yet been clarified. In order to establish a new denture cleaning method that uses acrylic denture base resin containing FAp-TiO2, we investigated the solubility of FAp-TiO2 and evaluated its photocatalytic effects by measuring the decomposition of methylene blue (MB) and the viability of Candida albicans. In the solubility test, FAp-TiO2 initially inhibited the solubility of calcium as compared to HAp-TiO2. The decomposition of MB decreased significantly in FAp-TiO2 as compared to that in Hap-TiO2 (p<0.01). Furthermore, the cell viability of C.albicans decreased significantly in FAp-TiO2 as compared to that in Hap-TiO2 (p<0.01). These results indicated that FAp-TiO2 had superior acid resistant properties and exhibited greater photocatalytic activity than HAp-TiO2, suggesting the possibility for the extensive use of FAp-TiO2 as a novel photocatalyst material, and its application in the field of dentistry.
Practice　： Dentistry
Keywords　： Titanium dioxide (TiO2), Photocatalyst, Fluoridated apatite, Acid resistance, Candida albicans