September 2018

Volume 35, Issue 3

Fluoride content of toothpastes available in South Africa

Authors: Lesley Vorster Sudeshni Naidoo Nicole Stauf Christopher Holmgren Habib Benzian
doi: 10.1922/CDH_4294Vorster07


A high dental caries burden coupled with a lack of water or salt fluoridation make it imperative that toothpastes available to the South African consumer demonstrate adequate potential for caries control and contain between 1000ppm and 1500ppm total fluoride (TF), with at least 1000ppm F in free available/soluble form. Methods: The objective was to determine TF, total soluble fluoride (TSF) and insoluble fluoride (IF) concentrations in 22 fluoride toothpastes commercially available in South Africa. Samples were purchased from a major pharmaceutical and food retailer located in the two metropolitan areas in South Africa. TF and TSF concentrations were determined potentiometrically, in quadruplicate, following acid hydrolysis of the samples using a calibrated Combination Fluoride Ion Selective Electrode. IF was calculated by subtracting TSF from TF. Results: Although TF content was found to be statistically significantly lower than manufacturer declaration (3.2x10-7; p≤0.05), 77.3% of the samples still contained adequate free, available/soluble F levels. Relative mean TSF content for toothpastes formulated with a calcium-based abrasive was 85% (sd ±14.5; n=6) as opposed to 98.6% (sd ±2.6; n=16) for those containing silica. Conclusions: The total fluoride concentration of all the toothpastes was lower than that declared by the manufacturers, with one in four having TSF concentrations of less than 1000ppm F. The relative TSF concentrations for the calcium-containing toothpastes were lower than for the silica-based products, reducing their preventive and protective potential. The results call for strengthened regulation and quality control of fluoride toothpastes in South Africa, as well as international efforts to improve related norms. Key words: Fluoride toothpaste, dental caries prevention, toothbrushing, oral health, public dental health


Other articles in this issue

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A UK and Partisan view of Brexit and Dental Public Health 130-131 Download
Dental Public Health in Action: Putting oral health on the local public health agenda 132-135 Download
Dental Public Health In Action: Barriers to oral healthcare provision for older people in residential and nursing care homes: A mixed method evaluation and strategy development in County Durham, North East England 136-139 Download
Confirmatory factor analysis of the health literacy in dentistry scale (HeLD) in the Australian population 140-147 Download
The relationships among consumption of fruits, tooth loss and obesity 148-152 Download
School-based oral health education increases caries inequalities 153-159 Download
Social gradient in caries experience of Belgian adults 2010 160-166 Download
Patients’ willingness to pay for dental services in a population with limited restorative services 167-172 Download
Oral health behaviours and oral health-related dietary behaviours: The interrelationship and determinants by latent class analysis 173-178 Download
Depressive symptoms and untreated coronal dental caries among adults ages 21-64 years, NHANES 2013-2014 179-185 Download
Fluoride content of toothpastes available in South Africa 186-192 Download


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