Research Topics
| Seigo OkawaSummaryAffiliation: Niigata University Country: Japan Publications
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Detail Information
Publications
Surface properties of electrochemically buffed titanium castingSeigo Okawa
Division of Dental Biomaterial Science, Niigata University Graduate School of Medical and Dental Sciences, Gakkoucho dori 2 5274, Niigata 951 8514, Japan
Dent Mater J 23:504-11. 2004..At higher potentials, reaction products might be dissolved anodically, so that the surface was chemically clean to some extent. The surface also became rich in OH-...- Characterization of calcium phosphate deposited on valve metal by anodic oxidation with polarity inversionSeigo Okawa
Division of Biomaterial Science, Department of Oral Health Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
Dent Mater J 28:513-8. 2009..Deposits with nano-grain size were observed by AFM. The results confirmed that CAP with nano-grain size was deposited on valve metals by the anodic oxidation with polarity inversion... - Chemical mechanical polishing of titanium with colloidal silica containing hydrogen peroxide--mirror polishing and surface propertiesSeigo Okawa
Division of Biomaterial Science, Department of Oral Health Science, Niigata University Graduate School of Medical and Dental Sciences, 5274 Gakkocho dori 2, Chuo Ku, Niigata 951 8514, Japan
Dent Mater J 28:68-74. 2009..Results of this study showed that CMP using colloidal silica containing H2O2 successfully created a mirror-polished surface without contaminated and reacted layers... - Surface texture and composition of titanium brushed with toothpaste slurries of different pHsAwlad Hossain
Division of Biomaterial Science, Graduate School of Medical and Dental Sciences, Niigata University, Gakkoucho dori 2 5274, Niigata 951 8514, Japan
Dent Mater 23:186-92. 2007..This in vitro study characterized the surface texture and composition of titanium brushed with toothpaste slurries of different pHs, and thereby elucidated mechanochemical interactions between the metal and abrasive material in dentifrice... - Morphological and chemical analysis of different precipitates on mineral trioxide aggregate immersed in different fluidsLinlin Han
Division of Cariology, Operative Dentistry and Endodontics, Department of Oral Health Science, Niigata University Graduate School of Medical and Dental Sciences, 5274 Gakkocho dori, 2 Ban cho, Chuo Ku, Niigata 951 8514, Japan
Dent Mater J 29:512-7. 2010..In conclusion, the precipitates formed on DW specimens were identified as calcium carbonate and calcium hydroxide primarily, whereas the precipitates on PBS specimens were inferred to be amorphous calcium phosphate... - Surface composition and texture of titanium polished with colloidal silica suspension and chromic oxide slurryAwlad Hossain
Division of Biomaterial Science, Course for Oral Life Science, Niigata University Graduate School of Medical and Dental Sciences, Gakkocho-dori 2-5274, Niigata 951-8514, Japan
Dent Mater J 24:409-13. 2005..In addition, the level of oxygen concentration was noticeably raised, which probably resulted from the increase of surface oxide film thickness or the extension of oxide-to-metal transition zone... - Surface analysis of commercially pure titanium implant retrieved from rat bone. Part 1: initial biological response of sandblasted surfaceKouichi Watanabe
Division of Biomaterial Science, Department of Oral Health Science, Niigata University Graduate School of Medical and Dental Sciences, 5274 Gakkoucho dori 2, Chuo Ku, Niigata 951 8514, Japan
Dent Mater J 28:178-84. 2009..Furthermore, no correlation was found between the Ca and P distributions in the element maps. In conclusion, no calcium phosphate compounds were formed on the implant in vivo after 7 days... - Effect of toothbrushing on titanium surface: an approach to understanding surface properties of brushed titaniumAwlad Hossain
Division of Dental Biomaterial Science, Graduate School of Medical and Dental Sciences, Niigata University, Gakkoucho-dori 2-5274, Niigata 951-8514, Japan
Dent Mater 22:346-52. 2006..Dentifrice with lower abrasivity might be advisable for daily oral hygiene practice of patients with dental titanium devices... - Abrading increases oxygen and hardness of titanium surfaceOsamu Miyakawa
Division of Biomaterial Science, Course for Oral Life Science, Niigata University Graduate School of Medical and Dental Sciences, Japan
Dent Mater J 25:13-9. 2006..In conclusion, abrading with a coarse grit led to accumulation of a high, non-uniform strain in the titanium substrate, thereby hardening the surface further... - Morphological and chemical characterizations of the interface of a hydroxyapatite-coated implantKiichirou Mimura
Mimura Dental Clinic, Fujinomiya, Shizuoka, Japan
Dent Mater J 23:353-60. 2004..Analysis showed diffusion of Ca into the metal substrate, hence indicating the presence of chemical bond at the interface. However, mechanical interlocking seemed to play the major role in the interfacial bond...