title: Hydrophilic nano-silica coating agents with platinum and diamond nanoparticles for denture base materials.
abstract: Preventing microorganisms from adhering to the denture surface is important for ensuring the systemic health of elderly denture wearers. Silica coating agents provide high hydrophilicity but lack durability. This study investigated solutions to improve the durability of the coating layer, determine an appropriate solid content concentration of SiO2in the silica coating agent, and evaluate the effect of adding platinum (Pt) and diamond nanoparticles (ND) to the agent. Five coating agents were prepared with different SiO2concentrations with/without Pt and ND additives. The contact angle was measured, and the brush-wear test was performed. Scanning electron microscopy was used to investigate the silica coating layer. The appropriate concentration of SiO2was found to be 0.5-0.75 wt%. The coating agents with additives showed significantly high hydrophilicity immediately after coating and after the brush-wear test. The coating agents with/without additives formed a durable coating layer even after the brush-wear test.
authors.affiliation: Gerodontology and Oral Rehabilitation, Department of Gerontology and Gerodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.
authors.forename: Taro
authors.initials: T
authors.lastname: Yoshizaki
authors.affiliation: Gerodontology and Oral Rehabilitation, Department of Gerontology and Gerodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.
authors.forename: Norihisa
authors.initials: N
authors.lastname: Akiba
authors.affiliation: Gerodontology and Oral Rehabilitation, Department of Gerontology and Gerodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.
authors.forename: Masanao
authors.initials: M
authors.lastname: Inokoshi
authors.affiliation: Japan Nano Coat.
authors.forename: Masayuki
authors.initials: M
authors.lastname: Shimada
authors.affiliation: Gerodontology and Oral Rehabilitation, Department of Gerontology and Gerodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Minakuchi
mesh_terms: D003819:Denture Bases; D018130:Diamond; D053758:Nanoparticles; D010984:Platinum; D012822:Silicon Dioxide
chemical_list: D010984:Platinum; D012822:Silicon Dioxide; D018130:Diamond
keywords: Denture base material; Diamond nanoparticle; Platinum nanoparticle; Silica coating; Surface modification