(13) Salivary fluoride retention after APF gel
application in children's mouths seemed to be more affected by the residual gel remaining in the oral cavity than by the amount applied, since a lower fluoride dose used with a toothbrush resulted in the same salivary retention as traditional application with a tray using a four-fold higher amount of gel.
A greater fluoride concentration in the APF gel
, its lower pH, application regimen and porosity of the lesion favours greater fluoride absorption [Mellberg et al., 1988].
* Preliminary data suggests that the combination of APF gel
application and daily regular use of 1,100 ppm fluoride dentifrice may provide additional protection against root caries compared with the dentifrice alone.