Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
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AN EXPERIMENTAL STUDY OF THE EFFECT OF FLUORIDE COMPOUNDS ON THE GROWTH OF STREPTOCOCCUS MUTANS

불소화합물이 Streptococcus mutans의 증식에 미치는 영향에 관한 실험적 연구

  • In, In -Sook (Dept. of Pedodontics, College of Dentistry, Yonsei University) ;
  • Lee, Jong-Gap (Dept. of Pedodontics, College of Dentistry, Yonsei University)
  • 인인숙 (연세대학교 치과대학 소아치과학교실) ;
  • 이종갑 (연세대학교 치과대학 소아치과학교실)
  • Published : 1984.12.31
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Abstract

The purpose of this study was to compare the growth-inhibiting effect of sodium fluoride and stannous fluoride on a cariogenic strain of Streptococcus mutans exposed to the different concentration of $SnF_2$ and NaF The result were as follows: 1. The growth rate of the Streptococcus mutans was unaffected by 75 ppmF, slowed by 150 ppmF, and immediately arrested by 300 or 600 ppmF where increments of NaF were added to actively growing 12-hour broth culture. 2. $SnF_2$ slowed the growth rate at 75 ppmF, was to bactericidal initially at 150 and 300 ppmF, and was to totally bactercidal at 600 ppmF. 3. $SnF_2$ has been shown to be more effective than NaF in inhibiting the growth activity of Streptococcus mutans. 4. The inhibitory effect of fluoride compounds on the growth of Streptococcus mutans was increased in the decreased pH at concentration of 600 ppmF.

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