Urinary fluoride excretion by children 4-6 years old in a south Texas community
This study evaluated urinary fluoride excretion by school children 4-6 years old who were living in a south Texas rural community that had concentrations of fluoride in drinking water supplies generally around the optimal level. We took supervised collections of urine samples in the morning and afte...
Published in: | Revista Panamericana de Salud Pública |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English Spanish Portuguese |
Published: |
Pan American Health Organization
2000
|
Subjects: | |
Online Access: | https://doi.org/10.1590/s1020-49892000000400005 https://doaj.org/article/bc61bd8724934ed8987876bbaaed4ada |
id |
ftdoajarticles:oai:doaj.org/article:bc61bd8724934ed8987876bbaaed4ada |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:bc61bd8724934ed8987876bbaaed4ada 2023-05-15T15:13:30+02:00 Urinary fluoride excretion by children 4-6 years old in a south Texas community Ramon J. Baez Martha X. Baez Thomas M. Marthaler 2000-04-01T00:00:00Z https://doi.org/10.1590/s1020-49892000000400005 https://doaj.org/article/bc61bd8724934ed8987876bbaaed4ada EN ES PT eng spa por Pan American Health Organization http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S1020-49892000000400005&lng=en&tlng=en https://doaj.org/toc/1020-4989 1020-4989 doi:10.1590/s1020-49892000000400005 https://doaj.org/article/bc61bd8724934ed8987876bbaaed4ada Revista Panamericana de Salud Pública, Vol 7, Iss 4, Pp 242-248 (2000) Medicine R Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 article 2000 ftdoajarticles https://doi.org/10.1590/s1020-49892000000400005 2022-12-31T05:24:34Z This study evaluated urinary fluoride excretion by school children 4-6 years old who were living in a south Texas rural community that had concentrations of fluoride in drinking water supplies generally around the optimal level. We took supervised collections of urine samples in the morning and afternoon at school, and parents of the participating students collected nocturnal samples. We recorded the beginning and end times of the three collection periods and then determined the urinary volume and urinary flow for each of the periods. We measured urinary fluoride concentrations and calculated the urinary excretion rate per hour. The children had breakfast and lunch provided at the school, where the drinking water contained 1.0-1.3 milligrams/liter (mg/L) fluoride. Fluoride concentrations in the tested household water supplies, from wells, ranged from 0.1 to 3.2 mg/L fluoride. The children's average urinary fluoride concentrations found for the day were similar to those for the night, with means ranging from 1.26 mg/L to 1.42 mg/L. Average excretion was 36.4 µg/h in the morning, 45.6 µg/h in the afternoon, and 17.5 µg/h at night. The lower nocturnal excretion rates are easily explained by low urinary flow at night. Based on the 15 hours of urine collected, the extrapolated 24-hour fluoride excretion was 749 µg. In conjunction with similar studies, the data from this study will help in developing upper limits for urinary fluoride excretion that are appropriate for avoiding unsightly fluorosis while providing optimal protection against dental decay. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Revista Panamericana de Salud Pública 7 4 242 248 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Spanish Portuguese |
topic |
Medicine R Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
spellingShingle |
Medicine R Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 Ramon J. Baez Martha X. Baez Thomas M. Marthaler Urinary fluoride excretion by children 4-6 years old in a south Texas community |
topic_facet |
Medicine R Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
description |
This study evaluated urinary fluoride excretion by school children 4-6 years old who were living in a south Texas rural community that had concentrations of fluoride in drinking water supplies generally around the optimal level. We took supervised collections of urine samples in the morning and afternoon at school, and parents of the participating students collected nocturnal samples. We recorded the beginning and end times of the three collection periods and then determined the urinary volume and urinary flow for each of the periods. We measured urinary fluoride concentrations and calculated the urinary excretion rate per hour. The children had breakfast and lunch provided at the school, where the drinking water contained 1.0-1.3 milligrams/liter (mg/L) fluoride. Fluoride concentrations in the tested household water supplies, from wells, ranged from 0.1 to 3.2 mg/L fluoride. The children's average urinary fluoride concentrations found for the day were similar to those for the night, with means ranging from 1.26 mg/L to 1.42 mg/L. Average excretion was 36.4 µg/h in the morning, 45.6 µg/h in the afternoon, and 17.5 µg/h at night. The lower nocturnal excretion rates are easily explained by low urinary flow at night. Based on the 15 hours of urine collected, the extrapolated 24-hour fluoride excretion was 749 µg. In conjunction with similar studies, the data from this study will help in developing upper limits for urinary fluoride excretion that are appropriate for avoiding unsightly fluorosis while providing optimal protection against dental decay. |
format |
Article in Journal/Newspaper |
author |
Ramon J. Baez Martha X. Baez Thomas M. Marthaler |
author_facet |
Ramon J. Baez Martha X. Baez Thomas M. Marthaler |
author_sort |
Ramon J. Baez |
title |
Urinary fluoride excretion by children 4-6 years old in a south Texas community |
title_short |
Urinary fluoride excretion by children 4-6 years old in a south Texas community |
title_full |
Urinary fluoride excretion by children 4-6 years old in a south Texas community |
title_fullStr |
Urinary fluoride excretion by children 4-6 years old in a south Texas community |
title_full_unstemmed |
Urinary fluoride excretion by children 4-6 years old in a south Texas community |
title_sort |
urinary fluoride excretion by children 4-6 years old in a south texas community |
publisher |
Pan American Health Organization |
publishDate |
2000 |
url |
https://doi.org/10.1590/s1020-49892000000400005 https://doaj.org/article/bc61bd8724934ed8987876bbaaed4ada |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Revista Panamericana de Salud Pública, Vol 7, Iss 4, Pp 242-248 (2000) |
op_relation |
http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S1020-49892000000400005&lng=en&tlng=en https://doaj.org/toc/1020-4989 1020-4989 doi:10.1590/s1020-49892000000400005 https://doaj.org/article/bc61bd8724934ed8987876bbaaed4ada |
op_doi |
https://doi.org/10.1590/s1020-49892000000400005 |
container_title |
Revista Panamericana de Salud Pública |
container_volume |
7 |
container_issue |
4 |
container_start_page |
242 |
op_container_end_page |
248 |
_version_ |
1766344060200550400 |