A Study of Monomer Eluted from Photo-cured Denture Relining Resin. Antibacterial Activity against the Oral Bacteria.

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  • Nigauri Akihiko
    Department of Removable Partial Denture Prosthodontics, Asahi University School of Dentistry
  • Yamauchi Mutsuo
    Dental Clinic, Post-doctoral Institute of Clinical Dentistry, Asahi University
  • Lee Kilsoo
    Department of Removable Partial Denture Prosthodontics, Asahi University School of Dentistry
  • Matsuki Mitsuhiro
    Department of Removable Partial Denture Prosthodontics, Asahi University School of Dentistry
  • Okamoto Takeshi
    Department of Removable Partial Denture Prosthodontics, Asahi University School of Dentistry
  • Nagasawa Tooru
    Department of Removable Partial Denture Prosthodontics, Asahi University School of Dentistry

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Other Title
  • 光重合型リライニング用レジンの溶出モノマーに関する検討　　口腔内細菌に対する抗菌性について
  • Antibacterial Activity against the Oral Bacteria
  • 口腔内細菌に対する抗菌性について

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Abstract

The antibacterial activity of photo-cured denture relining resin against oral bacteria from the viewpoint of denture plaque control as investigated. Four kinds of photo-cured denture relining resins was used for the experiment. S. sanguis ATCC 10556, S. mutans ATCC 25175, S. mitis ATCC 3339, S. salivarius ATCC 25975, B. gingivalis ATCC 3327, and Candida albicans ATCC 18804 were used as test strains. Antibacterial activity of the photo-cured denture relining resin immediately after curing and after immersion in artificial saliva for one week were measured. An elute from the resins was measured by high-performance liquid chromatography.<BR>Three relining resins showed antibacterial activity against the S. mutans, two resins showed antibacterial activity against the B. gingivalis and one resin showed antibacterial activity against the Candida albicans. However, all resins showed no antibacterial activity against the S. sanguis, S. mitis and S. salivarius. After immersion of resin into the artificial saliva, the resin showed no antibacterial activity. Urethane dimethacrylate, iso-butylmathacrylate, and hexandioldimethacrylate were identified by high-performance liquid chromatography. These monomers showed the same antibacterial activity as the settings of relining resin.<BR>These results suggested that the antibacterial activity was produced by monomer of resin and relining resin did not have long lasting antibacterial activity.

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