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KMID : 0361920030330050381
Korean Journal of Orthodontics
2003 Volume.33 No. 5 p.381 ~ p.389
Effect of leaf-Extract from Camellia sinensis and Seed-Extract from Casia tora on Viabillity of Mutans Streptococci isolated from the interface between orthodontic brackets and tooth surfaces
Lim Sung-Hoon






Abstract
Mutans streptococci is the major causative factor in dental caries. Especially, orthodontic patients with fixed appliance are a risk group for dental caries. Because fixed appliances attached on teeth may change the environment of dental plaque, the enamel decalcification or dental caries around the bracket and band is a major side effect of orthodontic treatment. The aim of this study was to search plant extracts that have antimicrobial effect on mutans streptococci. Seed-extract of Casia tore were prepared with ethanol and CHMC-2032, the leaf-extracts from Camellia sinensis extract, was obtained
extract, 2 type strains and 20 clinical isolates of mutans streptococci isolated from the interface between orthodontic brackets and tooth surfaces in the orthodontic patients were used in this study. The minimal inhibitory concentration of CHMC-2032 was 5 mg/ml on the S rnutans KCTC 3065, S. sobrinus KC TC 3088, and 8 clinical isolates of S. sobrinus. However, there was no antibacterial effect of seed-extract of C. tora on mutans streptococci. These data suggest that green tea may be more effective than the tea prepared from C tom in the prevention of enamel decalcification or dental caries around brackets.
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