J Korean Acad Prosthodont.  2002 Oct;40(5):525-535.

Adherence Of Oral Bacteria On Chitosan: Added Denture Base Materials In Vitro

Affiliations
  • 1Department of Prosthodontics, College of Dentistry, Chonnam National University. msvang@hanmail.net

Abstract

The purposes of this study were to evaluate the adherence of bacteria on various denture base resin materials and effects of chitosan, added to denture base materials on bacterial adherence. PMMA denture base resin such as heat-cured Vertex-RS, self-cured Vertex-SC and 4-META denture base resin such as heat-cured Meta-Dent, self-cured Meta-Fast were used in this study. Samples were divided into two groups: the denture base resin with chitosan, without chitosan. Streptococcus mutans and Lactobacillus casei were used in this study. The surface of samples was observed by SEM. When chitosan was added to M17 and MRS broth, viable cell count of bacteria was reduced. Viable cell count of Streptococcus mutans on the samples decreased as follows: Meta-Dent, Vertex-SC, Meta-Fast, Vertex-RS. Viable cell count of Lactobacillus casei on the samples decreased as follows: Vertex-RS, Meta-Dent, Meta-Fast, Vertex-SC. The resin with chitosan showed lower adherence of bacteria than without chitosan. The images of SEM showed that the surface of the resin with chitosan was rougher than that of without chitosan. These results showed that the denture base resin materials with chitosan have rougher surface than without chitosan,but less bacteria adhered on them.

Keyword

Chitosan; PMMA; 4-META; Streptococcus mutans; Lactobacillus casei

MeSH Terms

Bacteria*
Cell Count
Chitosan*
Denture Bases*
Dentures*
Lactobacillus casei
Polymethyl Methacrylate
Streptococcus mutans
Chitosan
Polymethyl Methacrylate
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