Korean J Orthod.  2003 Oct;33(5):381-389.

Effect of Leaf-Extract from Camellia sinensis and Seed-Extract from Casia tora on Viability of Mutans Streptococci isolated from the interface between orthodontic brackets and tooth surfaces

• Lim SH
• Seo JS
• Yoon YJ
• Kim KW
• Yoo SY
• Kim HS
• Kook JK
• Lee BR
• Cha JH
• Park JY

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 tora 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. mutans KCTC 3065, S. sobrinus KCTC 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. tora in the prevention of enamel decalcification or dental caries around brackets.

Keyword

Camellia sinensis; Casia tora; Mutans streptococci; Dental caries; Orthodontic bracket

MeSH Terms

Camellia sinensis*
Camellia*
Dental Caries
Dental Enamel
Dental Plaque
Ethanol
Humans
Orthodontic Brackets*
Plant Extracts
Tea
Tooth*
Ethanol
Plant Extracts
Tea