Antimicrobial and antifungal effects of tissue conditioners containing a photocatalyst

Masayuki Uchimaru, Takako Sakai, Ryoji Moroi, Susumu Shiota, Yukie Shibata, Mikito Deguchi, Hidetaka Sakai, Yoshihisa Yamashita, Yoshihiro Terada

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)691-699
Number of pages9
Journaldental materials journal
Issue number5
Publication statusPublished - 2011

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • General Dentistry


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