アブストラクト(23巻3号:神奈川歯学)

神奈川歯学

Japanese

Title : KKY-agar - Streptococcus mutans選択培地 - を用いたう蝕活動性試験の疫学的研究
Subtitle : 原著
Authors : 杉山義祥1),2), 木本椿作1), 飯塚喜一2)
Authors(kana) :
Organization : 1)神奈川歯科大学予防歯科学教室, 2)神奈川歯科大学口腔衛生学教室
Journal : 神奈川歯学
Volume : 23
Number : 3
Page : 320-336
Year/Month : 1988 / 12
Article : 原著
Publisher : 神奈川歯科大学学会
Abstract : 「緒言」1940年, Snyderがう蝕活動性試験を考案した時代は, 一般的にう蝕の主要原因菌がLactobacilliであると考えられていた. したがって, Lactobacilliを指標とするう蝕活動性試験が, この菌に対する選択性の高い培地を用いて多数報告されている. 実際に, Lactobacilliは健全歯面からは検出されにくく, う蝕が発生しはじめるとその数が増加し, う窩を充填すると再び減少するという事実があり, このことがう蝕のLactobacilli病因説を裏付けているようにも思われていた. しかし, Orlandらの動物実験以来, Streptococcus mutans (以後, S.mutansと略す) に関する研究が進み, 現在では, う蝕はこの菌を主要な病因とする内因感染によって発症するとの解釈が定着しつつある. ことにFitzgeraldらは, 動物実験においてある種のStreptococciには強いう蝕原性を認めるが, Lactobacilliにはう蝕誘発能がないことを報告した.
Practice : 歯科学
Keywords : S.mutans選択培地, う蝕活動性試験 (KKY test), 予測性, 混合歯列期

English

Title : Epidemiological Studies on Caries Activity Test by KKY-agar - Streplococcus mutans selective medium -
Subtitle : Original article
Authors : Yoshiaki SUGIYAMA1),2), Shunsaku Kimoto1), Yoshikazu Iizuka2)
Authors(kana) :
Organization : 1)Department of Preventive Dentistry Kanagawa Dental College, 2)Department of Dental Health and Publblic Health, Kanagawa Dental College
Journal : Kanagawa Shigaku
Volume : 23
Number : 3
Page : 320-336
Year/Month : 1988 / 12
Article : Original article
Publisher : Kanagawa Odontological Society
Abstract : Abstract : In our previous reports, a newly developed caries activity test -KKY test- were informed. This test is based on S.mutans in dental plaque material measured by a colorimetric method. The present study was carried out to analyze the relationships between the KKY test scores and the prevalence and / or the increments of dental caries after 6 months or one year of school children. 502 subjects were investigated and their oral conditions were observed for one year. The following results were obtained : 1. A highly significant relationship was shown between the KKY test scores and the caries prevalence. 2. A significant relationship was found between the KKY test scores and the increment of decay after 6 months. 3. No clear relationship was observed between the KKY test scores and the caries increment after one year. Therefore, the KKY test using S.mutans selective medium seems useful for measuring the caries activity in dental practice. Although, its reliability in predicting the number of new carious lesion that will develop in a specified period is uncertain, it may be concluded that KKY test is possible of dividing the subjects into two classes, negative or slight caries activity group and positive or high caries activity group, in predicting the futnre (in 6 months) incidence of dental caries.
Practice : Dentistry
Keywords :