The chemical components of drinking water in a dental fluorosis area, Kitatsugaru
-
- MATSUDA Kazuhiro
- Department of Preventive Dentisty, School of Dentistry, Iwate Medical University
-
- HARADA Ushio
- Department of Preventive Dentisty, School of Dentistry, Iwate Medical University
-
- IIJIMA Yoichi
- Department of Preventive Dentisty, School of Dentistry, Iwate Medical University
-
- TAZAWA Mitsumasa
- Department of Preventive Dentisty, School of Dentistry, Iwate Medical University
-
- TAKAESU Yoshinori
- Department of Preventive Dentisty, School of Dentistry, Iwate Medical University
Bibliographic Information
- Other Title
-
- 青森県北津軽郡における斑状歯発生地域の飲料水中化学成分について
- アオモリケン キタツガルグン ニ オケル ハンジョウシ ハッセイ チイキ ノ
Search this article
Abstract
A widespread dental fluorosis has been found recently in two primary school districts, Soekawadaiichi and Umezawa, in the Kitatsugaru area (northern part of Japan), which was reported in our previous paper (1976). The fluorine concentrations in drinking water were determined monthly by fluoride electrode with samples from 23 deep wells (100-300 meters in depth) during eight months in 1975.<BR>The fluorine concentrations of these samples ranged from 0.31 to 3.18ppm. The waters containing fluorine over 0.8ppm are supplied to 734 houses, which shows 85.4 percent of the total number of houses in these districts. The value of 0.8ppm is the maximum allowable amount of fluorine in communal water established by the communal water administration in Japan. The drinking waters with fluorine concentrations of more than 2.0ppm are supplied to 190 houses (44.4%) in Soekawadaiichi district and 55 houses (12.8%) in Umezawa district.<BR>On the whole, relatively high pH values (pH 7.2-8.7), high sodium (41-265ppm) and chlorine (19-460ppm) concentrations, and low values in total hardness were observed in these samples. It was also noticed that the concentrations of fluorine showed a positive correlation with sodium and chlorine in these samples.<BR>The source of the fluorine detected in the water of these districts has not yet been ascertained. However, the possibilities that result from a mixing of mineral and hot spring waters, an influence of oceanic factors, or elution from fluorine-rich rocks were discussed.
Journal
-
- JOURNAL OF DENTAL HEALTH
-
JOURNAL OF DENTAL HEALTH 27 (1), 8-14, 1977
Japanese Society for Oral Health
- Tweet
Details 詳細情報について
-
- CRID
- 1390282679980270848
-
- NII Article ID
- 130001313203
-
- NII Book ID
- AN00081407
-
- DOI
- 10.5834/jdh.27.8
-
- ISSN
- 21897379
- 00232831
-
- NDL BIB ID
- 1912441
-
- PubMed
- 275317
-
- Data Source
-
- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
-
- Abstract License Flag
- Disallowed