title: Antimicrobial and antifungal effects of tissue conditioners containing a photocatalyst.
abstract: This study examined the antimicrobial/antifungal ability of a tissue conditioner containing a photocatalyst for Escherichia coli, Streptococcus mutans, Staphylococcus aureus and Candida albicans. The photocatalyst was mixed with tissue conditioners powders at concentrations of 0, 10, 15, and 20 wt%. Tissue conditioners powders containing a photocatalyst were mixed with liquid to make test specimens. Test specimens inoculated by each microorganism were irradiated by ultraviolet light for 0-, 2- and 4 hours. The antimicrobial/antifungal effects were evaluated by the CFU technique. The CFU values of each microorganism for tissue conditioners containing a photocatalyst showed significant decrease following UV-irradiation. The improvement in antimicrobial/antifungal effects was concomitant with the increase of the mixing ratio and the irradiation time. Therefore, the results indicated that tissue conditioners containing a photocatalyst might have photocatalytic ability.
authors.affiliation: Section of Fixed Prosthodontics, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
authors.forename: Masayuki
authors.initials: M
authors.lastname: Uchimaru
authors.forename: Takako
authors.initials: T
authors.lastname: Sakai
authors.forename: Ryoji
authors.initials: R
authors.lastname: Moroi
authors.forename: Susumu
authors.initials: S
authors.lastname: Shiota
authors.forename: Yukie
authors.initials: Y
authors.lastname: Shibata
authors.forename: Mikito
authors.initials: M
authors.lastname: Deguchi
authors.forename: Hidetaka
authors.initials: H
authors.lastname: Sakai
authors.forename: Yoshihisa
authors.initials: Y
authors.lastname: Yamashita
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Terada
mesh_terms: D000890:Anti-Infective Agents / Q000494:pharmacology*; D000935:Antifungal Agents / Q000494:pharmacology*; D058491:Bacterial Load / Q000187:drug effects / Q000528:radiation effects; D002176:Candida albicans / Q000187:drug effects / Q000528:radiation effects; D015169:Colony Count, Microbial; D003764:Dental Materials / Q000737:chemistry*; D003998:Dicarboxylic Acids / Q000737:chemistry; D017886:Durapatite / Q000737:chemistry; D004926:Escherichia coli / Q000187:drug effects / Q000528:radiation effects; D006801:Humans; D008422:Materials Testing; D008768:Methylmethacrylates / Q000737:chemistry; D055668:Photochemical Processes; D010968:Plasticizers / Q000737:chemistry; D013211:Staphylococcus aureus / Q000187:drug effects / Q000528:radiation effects; D013295:Streptococcus mutans / Q000187:drug effects / Q000528:radiation effects; D013997:Time Factors; D014016:Tissue Conditioning, Dental; D014025:Titanium / Q000737:chemistry; D014466:Ultraviolet Rays
chemical_list: D000890:Anti-Infective Agents; D000935:Antifungal Agents; D003764:Dental Materials; D003998:Dicarboxylic Acids; D008768:Methylmethacrylates; D010968:Plasticizers; C055481:dibutyl sebacate; C009931:poly(ethylmethacrylate); D017886:Durapatite; D014025:Titanium