Plaque controlに関与する因子の相互の関連性について

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タイトル別名
  • The Correlation of Factors Concerning Dental Plaque Control
  • Plaque control ニ カンヨスル インシ ノ ソウゴ ノ カンレン
  • The cumulative analysis of variance of multiple-way classification
  • 特に多元配置累積法による解析評価

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The plaque control has been discussd and practiced in many ways recently. We divided these ways into four categories and picked up four factors which were considered to be the most basic and important in clinical plaque control.<BR>To study about the correlation between these factors, sixty-three adult women were examined in regard to toothbrushing and the plaque index was evaluated. According to clinical tests, following results were obtained.<BR>The plaque control effects of three toothbrushing methods, i. e., Rolling, Scrubbing and Bass' methods, were not statistically significant differences. However, the two-factor interaction between factors of toothbrushing methods and surfaces of teeth was statistically significant and the order of plaque control effects on lingual and palatinal surfaces was Scrubbing>Rolling≥Bass' methods.<BR>With respect to the factor of the hardness of the tooth-brush hair, it had a statistically significant effect on the plaque control. In proportion to the hardness, the order of plaque control effects was Hard>Medium≥Soft. These effects were not influenced by any other factors and had no statistically significant interaction.<BR>As for the dentition and surfaces of teeth, plague control was more difficult on the lingual and palatinal surfaces under the conditions used in these clinical tests. Moreover, on lingual and palatinal surfaces Scrubbing method had a relatively stronger plaque control effect.<BR>In this study, the cumulative analysis of variance of multiple-way classification was applied to confirm the interaction of factors. The results suggested that this statistic analysis was very useful for examining the interaction and considering the change of factors in the clinical tests.

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