Community Dental Health

cover art

Cover Date:
December 2009
Print ISSN:
0265 539X
Vol:
26
Issue:
4

Evaluation of the direct and diffusion methods for the determination of fluoride content in table salt

Objective: The aim of this study was to assess methods currently used for analyzing fluoridated salt in order to identify the most useful method for this type of analysis. Basic research design: Seventy-five fluoridated salt samples were obtained. Samples were analyzed for fluoride content, with and without pretreatment, using direct and diffusion methods. Element analysis was also conducted in selected samples. Fluoride was added to ultra pure NaCl and non-fluoridated commercial salt samples and Ca and Mg were added to fluoride samples in order to assess fluoride recoveries using modifications to the methods. Results: Larger amounts of fluoride were found and recovered using diffusion than direct methods (96%-100% for diffusion vs. 67%-90% for direct). Statistically significant differences were obtained between direct and diffusion methods using different ion strength adjusters. Pretreatment methods reduced the amount of recovered fluoride. Determination of fluoride content was influenced both by the presence of NaCl and other ions in the salt. Conclusion: Direct and diffusion techniques for analysis of fluoridated salt are suitable methods for fluoride analysis. The choice of method should depend on the purpose of the analysis.

Key Words: Fluoride, fluoride analysis, salt

Article Price
£15.00
Institution Article Price
£
Page Start
204
Page End
210
Authors
E.A. Martínez-Mier, A.E. Soto-Rojas, C.M. Buckley, J. Margineda, D.T. Zero

Articles from this issue

  • Title
  • Pg. Start
  • Pg. End

  1. Editorial - Beyond water fluoridation; the emergence of functional foods for oral health
  2. 194
  3. 195

  1. Book Review - “Food constituents and oral health”
  2. 196
  3. 196

  1. Sense of coherence associates with oral and general health behaviours
  2. 197
  3. 203

  1. Evaluation of the direct and diffusion methods for the determination of fluoride content in table salt
  2. 204
  3. 210

  1. Fluoride toothpaste utilization behaviour among preschool children in Perlis, Malaysia
  2. 211
  3. 215

  1. Rural Mexican immigrant parents’ interpretation of children’s dental symptoms and decisions to seek treatment
  2. 216
  3. 221

  1. Assessment of HIV/AIDS awareness among 500 patients referred to the Ankara University Faculty of Dentistry
  2. 222
  3. 226

  1. Professional charges not reimbursed to dentists in the US: evidence from Medical Expenditure Panel Survey, 1996.
  2. 227
  3. 233

  1. Quality of life in patients with dental conditions: comparing patients’ and providers’ evaluation
  2. 234
  3. 238

  1. Understanding politics? Some lessons from Swedish dentistry.
  2. 239
  3. 243

  1. Factors influencing the need for dental care amongst the elderly in the Republic of Ireland
  2. 244
  3. 249

  1. The periodontal health of Nepalese schoolchildren
  2. 250
  3. 256