アブストラクト（13巻3号：神奈川歯学）

神奈川歯学

Japanese

Title　： 乳歯中の微量元素ならびにそのう蝕経験との関係について
Subtitle　： 原著
Authors　： 横田嘉郎, 飯塚喜一
Authors（kana）　：
Organization　： 神奈川歯科大学口腔衛生学教室
Journal　： 神奈川歯学
Volume　： 13
Number　： 3
Page　： 144-160
Year/Month　： 1978 / 12
Article　： 原著
Publisher　： 神奈川歯科大学学会
Abstract　： 「はじめに」歯質中のフッ素(F)含有量およびその歯質内での分布状態が, う蝕との関連において興味をもたれるようになって以来, その他の微量元素も注目を浴びるようになってきた. これは, Brudevoldら, Soremarkら, Nixonをはじめとするいくつかの業績がその端緒になったものである. 歯質中のFがう蝕抵抗性を増大させるという画期的な所見の報告以来, 多くの疫学的および臨床的業績とあいまって, Fによるう蝕予防方法は確固たる地位を築いている. このほか, Fとの共同作用によりモリブデン(Mo)がう蝕抑制効果を示しうることを示唆した研究や, 逆にセレニウム(Se)がう蝕を増発させるという研究などがあるが, 実験動物や疫学による研究結果では, 必ずしも立証されているわけではない. 一方, 歯質中の微量元素の種類, 含有量, 分布などに関してもいくつかの業績がみられる.
Practice　： 歯科学
Keywords　：

English

Title　： Studies on The Trace Elements in Deciduos Teeth and Their Relations to Caries Experience
Subtitle　：
Authors　： Yoshio Yokota, Y.Iizuka
Authors（kana）　：
Organization　： Department of Dental Health, Kanagawa Dental College
Journal　： Kanagawa Shigaku
Volume　： 13
Number　： 3
Page　： 144-160
Year/Month　： 1978 / 12
Article　： Original article
Publisher　： Kanagawa Odontological Society
Abstract　： [Abstract]: One thousand and seventy-seven samples of sound coronal part of teeth derived from deciduous teeth of individuals, aged from six to twelve years, were analysed by specific ion-electrodes for six trace elements - Pb, Cu, Hg, Ag, Cd and F. The teeth originated from Kanagawa Prefecture of Japan, representing many types of geographic environment and caries prevalence rates. Considering of present results, following conclusions may be introduced...... : 1. The mean concentrations (ppm) and their standard deviations for Pb, Cu, Hg, Ag, Cd and F were 14.95 +- 8.54, 0.07 +- 0.06, 0.35 +- 0.32, 0.39 +- 0.31, 0.54 +- 0.30 and 112.56 +- 42.18, respectively. 2. Lead concentration in deciduous incisor teeth was significantly higher than in deciduous canine or molar teeth. 3. Lead and cadmium concentrations in teeth affected with breast-feeding were significantly higher than in teeth affected with bottle-feeding. On the contrary, fluoride concentration in teeth affected with bottle-feeding was significantly higher than in teeth affected with breast-feeding, and a similar tendency was observed in mercury content. 4. There was significant positive correlation between the mercury content in teeth and the number of teeth restored with amalgam. 5. Significant negative correlations were observed between fluoride contents and not only the caries experience of deciduous teeth (dft) but also the caries experience of permanent teeth (DMFT). 6. Lead and cadmium contents in deciduous incisor teeth were significantly related with DMFT only. The interpretation for these results, however, is unclear and difficult.
Practice　： Dentistry
Keywords　：