Kenhardt revisited--a study in a high fluoride area.

نویسندگان

  • D H Retief
  • F H Barbakow
  • M Friedman
  • J I Bischoff
  • E H van der Merwe
  • E L Bradley
چکیده

Sixty-one 14 to 17-year-old White children (2 7 males and 34 females) who were born and had been living continually in Kenhardt were selected for this study. The DM FT and DEGF were determined clinically. Acid etch biopsies were done on both the maxillary central incisors of each pupil. F and Ca analyses were carried out on the biopsy solutions and mass fluoride expressed in picograms (pg) and mass enamel in micrograms (yg). Data transformations to logc mass F (InF), logc mass En (InEn) and V DM FT'were made. The InF values were adjusted to a standardized depth of 10 tun (enamel equivalent mass of 2OS. 6 yg) by covariance analysis.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

بررسی تأثیر میزان بالای فلوراید آب آشامیدنی بر هوش کودکان

Background and Aim: Human and animal studies linking fluoride with diminished intelligence have been published. Although adverse effects of high intake of fluoride on intelligence and mental acuity continue to be reported, they are still controversial. The aim of this research was to investigate the relationship between fluoride in drinking water and children's intelligence. Materials and Metho...

متن کامل

ACADEMIC WRITING REVISITED: A PHRASEOLOGICAL ANALYSIS OF APPLIED LINGUISTICS HIGH-STAKE GENRES FROM THE PERSPECTIVE OF LEXICAL BUNDLES

Lexical bundles are frequent word combinations that commonly appear in different registers. They have been the subject of much research in the area of corpus linguistics during the last decade. While most previous studies of bundles have mainly focused on variations in the use of these word combinations across different registers and a number of disciplines, not much research has been done to e...

متن کامل

Spatial Distribution, Health Risk Assessment and Survey of Fluoride Pollution Source with GIS in Drinking Water: A Case Study, in Abarkouh, Iran

Introduction: Exposure to high concentrations of fluoride in drinking water can negatively affect lung, liver and kidney tissues, and cause skeleton pain; however, lack of fluoride can cause tooth decay and bone problems. Materials and Methods: In this study, the concentration of fluoride was investigated and its spatial distribution was carried out with Arc GIS software in underground water o...

متن کامل

Geochemical assessment of groundwater quality with special emphasis on fluoride in Tabasein Plain, Eastern Iran

The aim of this research was the geochemical assessment of the groundwater quality and the evaluation of the distribution pattern of fluoride concentration in water resources of the region and their connection with the prevalence of dental fluorosis occurrence in the study area. To achieve to this goal six sediment and 22 water samples were taken and analyzed. Fluoride and phosphorous concentra...

متن کامل

Production of [18F] fluoride with a high-current two layer spherical gold target

Background: Fluoride-18 is the most widely used radioisotope for Positron Emission Tomography (PET). [18F] 2-flouro- 2-deoxy D-glucose (FDG) has become a standard tool in the area of clinical research. The oxygen-18 enriched water is the most widely used target for the production of fluoride-18. The use of the nuclear reaction 18O (p,n)18F has been found as the most effective method for the pro...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • The Journal of the Dental Association of South Africa = Die Tydskrif van die Tandheelkundige Vereniging van Suid-Afrika

دوره 34 8  شماره 

صفحات  -

تاریخ انتشار 1979