Calculus Splint下の生態学的研究

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  • Ecological study of the area under a calculus splint
  • Calculus Splintカ ノ セイタイガクテキ ケンキュウ

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The bacterial population in the dentogingival area under a calculus splint was examined.<BR>Streptococcus salivarius with urease activity decreased and granular organisms (A. viscosus) increased significantly.<BR>The dry weight of the deposition decreased significantly.<BR>There was no viable count of cariogenic bacteria, Streptococcus mutans either before or after wearing the calculus splint.<BR>Therefore, although the glicolitic bacteria increased when the calculus splint was worn and the local PHdecreased, there is no fear of suffering from dental caries.<BR>The ratio of Streptococcus mutans to total Streptococcus was measured at various times after a 10% glucose rinse.<BR>Streptococcus mutans could be counted only rarely on the labio-lingual surface of the anterior teeth, but in the pits and fissures of the molars, the maximum ratio was measured between 5 and 15 minutes after rinsing after 30 minutes there was a sharp decrease and after 60 minutes the ratio was gradually returning to the initial ratio.

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