Measurement of Bacteria Counts and the Ability of Acid Production in Disabled Patients under General Anesthesia

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  • KUBOTA Kazumasa
    Section of Dentistry, Tokyo Metropolitan Higashiyamato Medical Center for the Severely Disabled Anesthesiology and Clinical Physiology, Graduate School, Tokyo Medical and Dental Univerisity
  • MIZUTANI Ayako
    Section of Dentistry, Tokyo Metropolitan Higashiyamato Medical Center for the Severely Disabled
  • KURAMOTO Yusuke
    Section of Dentistry, Tokyo Metropolitan Higashiyamato Medical Center for the Severely Disabled
  • KISHI Yuko
    Section of Dentistry, Tokyo Metropolitan Higashiyamato Medical Center for the Severely Disabled
  • KUDO Ayako
    Section of Dentistry, Tokyo Metropolitan Higashiyamato Medical Center for the Severely Disabled
  • KIKUCHI Eiko
    Section of Dentistry, Tokyo Metropolitan Higashiyamato Medical Center for the Severely Disabled
  • TAKISHIMA Kaori
    Section of Dentistry, Tokyo Metropolitan Higashiyamato Medical Center for the Severely Disabled
  • OKUYAMA Junko
    Section of Dentistry, Tokyo Metropolitan Higashiyamato Medical Center for the Severely Disabled
  • YOSHIDA Takayoshi
    Section of Dentistry, Tokyo Metropolitan Higashiyamato Medical Center for the Severely Disabled
  • HASHIMOTO Yoshiaki
    Section of Dentistry, Tokyo Metropolitan Higashiyamato Medical Center for the Severely Disabled Department of Pedodontics, Tokyo Medical and Dental University
  • ONO Yoshiaki
    Section of Dentistry, Tokyo Metropolitan Higashiyamato Medical Center for the Severely Disabled Department of Pedodontics, Tokyo Medical and Dental University
  • SHIMOMACHI Kanae
    Section of Dentistry, Tokyo Metropolitan Higashiyamato Medical Center for the Severely Disabled Section of Dentistry, Kashiwa Medical Center
  • MATSUMURA Tomoka
    Anesthesiology and Clinical Physiology, Graduate School, Tokyo Medical and Dental Univerisity
  • WAKITA Ryo
    Anesthesiology and Clinical Physiology, Graduate School, Tokyo Medical and Dental Univerisity
  • FUKAYAMA Haruhisa
    Anesthesiology and Clinical Physiology, Graduate School, Tokyo Medical and Dental Univerisity
  • MOTOHASHI Katsunori
    Section of Dentistry, Tokyo Metropolitan Higashiyamato Medical Center for the Severely Disabled

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Other Title
  • 全身麻酔下での障害児（者）の口腔内細菌数と酸産生能の計測

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It would be useful to establish a therapeutic regimen based on a simple evaluation of oral health status because it is not easy to work with disabled patients and evaluate their status during dental treatment. We quantified the factors correlated with oral hygiene status, the severity of periodontal diseases, and the risk of dental caries in patients under general anesthesia. We recorded the number of decayed, missing, and filled teeth （DMFT）, the average periodontal pocket depth, and the number of bacteria on the tongue and on the mandibular teeth and the level of pH decrease.<br>We carried out correlation analysis and obtained the following results.<br>1. The number of bacteria on the tongue （γs＝0.241 （p＝0.019）） and the mandibular teeth （γs＝0.334 （p＝0.011）） correlated with the average periodontal pocket depth.<br>2. The ability of acid production and pH decrease correlated closely with the number of DMFT （γs＝0.581, （p＜0.001））.<br>3. The number of bacteria on the tongue and the mandibular teeth did not correlate with DMFT （number of bacteria on the tongue：γs＝－0.019 （p＝0.848）；number of bacteria on the mandibular teeth：γs＝－0.088 （p＝0.519））, nor with the ability of acid production （number of bacteria on the tongue：γs＝－0.168 （p＝0.145）；number of bacteria on the mandibular teeth：γs＝0.100 （p＝0.539））.<br>We conclude that the number of bacteria can be used to evaluate the oral hygiene status, but not the ability of acid production or number of teeth contracting dental caries. The number of bacteria had no relation with contracting dental caries.<br>We will be able to establish a therapeutic regimen for evaluating oral hygiene status by measuring the number of bacteria, and the number of teeth contracting dental caries by the ability of acid production.

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