Classification of Biological Types of Isolated Streptococcus from Dental Plaque in Kochi

Abstract

1 . Storeptococcus mutans was isolated from the dental plaque in the oral cavity of female students of Kochi Gakuen College. 2. Among 148 female students, S. mutans was isolated in 114 students. 3. Among five strains of Shllair classification, two strains were identified as c and b, respectively. 4. Among 114 samples of S. mutans, 112 samples were identified as strain C, and only 2 samples as strain b. However, one sample of the two b samples shows ± in L-Arginin reaction. 5. This seems to be the first report of the strain b isolation. This is also the first isolation report of S. mutans from residents in Kochi.