Dental Caries, Dental Fluorosis
Conditions
Keywords
toothpastes, bioavailability, sodium fluoride, monofluorphosphate, low-fluoride
Brief summary
Fluoride toothpaste has been associated not only with declining dental caries prevalence but also with an increase in dental fluorosis. In the balance of benefits/risks of fluoride toothpaste use, the purpose of this study is to evaluate the availability of fluoride concentration in the mouth (biofilm fuild), as an indicator of fluoride benefits (anticaries effect), and the fluoride concentration in urine, as an indicator of fluoride absorption from ingested toothpastes (with potential to cause dental fluorosis), in a sample of young Brazilian children using toothpaste formulations representative of those available and most used by this age-group.
Interventions
DRUGToothpaste
The volunteers brushed their teeth with 0.3 g of the assigned toothpastes, 3x/day.
Sponsors
University of Campinas, Brazil
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
PREVENTION
Masking
SINGLE (Investigator)
Eligibility
Sex/Gender
ALL
Age
3 Years to 4 Years
Healthy volunteers
Yes
Inclusion criteria
* Good general health * Good oral health
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Fluoride concentration in biofilm fluid | 30min | Remants of dental plaque (biofilm) will be collected 30 min after brushing with the toothpastes, the fluid will be separated from the solids by centrifugation and the fluoride concentration in the biofilm fluid will be determined by a fluoride electrode adapted for microanalysis. |
| Urinary fluoride excretion | 8h | Urine will be collected at two time-points, either before the use of the toothpaste or at the last day of use, in each experimental phase. Fluoride concentration was determined by an inverted ion-specific fluoride electrode and fluoride excretion will be measured by fluoride/cratinine ratio (mg F/mg creatinine). |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Fluoride concentration in biofilm solid | 30min | Remants of dental plaque (biofilm) will be collected 30 min after brushing with the toothpastes, the fluid will be separated from the solids by centrifugation and the fluoride concentration in the biofilm solids will be determined after acid extraction using a fluoride electrode adapted for microanalysis. |
| Fluoride concentration in saliva | 30min | Non-stimulated saliva will be collected at 0 (immediately before toothbrushing), 7, 15 and 30 min after toothbrushing. Fluoride concentration in saliva will be determined by a ion-specific fluoride electrode, adapted for microanalysis. |
| Amount of toothpaste ingested | January 2013 to July 2013 | Determination of amount of toothpaste ingested after one simulated brushing. |
Countries
Brazil
Outcome results
None listed