Determination of Fluoride in Acidulated Phosphate Topical Solutions Using Reaent-Free Chromatograaphy

Application Note 209: Determination of Fluoride in Acidulated Phosphate Topical SolutionsUsing Reaent-Free Chromatograaphy

In vitro evaluation of fluoride uptake from a thixotropic gel.

The in vitro fluoride uptake by dental enamel from two conventional acidulated phosphate fluoride gels was compared to a thixotropic acidulated phosphate fluoride gel. The fluoride concentration and enamel biopsy depths were determined using an acid-etch biopsy method based on calcium determinations. A significant fluoride uptake by dental enamel from a thixotropic topical fluoride agent follow...

Comparing the Effect of Topical Acidulated Phosphate Fluoride on Micro-Hardness of Two Fissure Sealants and One Flowable Composite

  Objective: Probable effect of fluoride containing materials like APF on sealants is very important. The purpose of this study is to assess the effect of frequent application of APF (1.23%) on the surface microhardness of two fissure sealants and one flowable composite.   Methods: In this experimental study, 81 specimens of two fissure sealants and one flowable composite were prepared, using s...

Evaluation of Topical Pre-Fluoride Therapy Effects on Marginal Microleakage of Composite Restorations in Deciduous Teeth: An In Vitro Study

Background and Aim: Since fluoride therapy is usually the first step of treatment in pediatric dentistry and it may interfere with other treatments, such as composite fill-ing, this study aimed to evaluate the possible effects of topical pre-fluoride therapy on marginal microleakage of composite restorations in deciduous teeth. Materials and Methods: In this in-vitro study, 30 deciduous canine...

Fluoride release by restorative materials before and after a topical application of fluoride gel.

The release of fluoride from restorative materials (Vitremer, Ketac-Fil, Fuji II LC and Freedom) was evaluated during two 15-day periods, before and after a topical application of acidulated phosphate fluoride gel (APF). For each material, 6 specimens were made, which were immersed in 2 ml of deionized water. The fluoride concentration dosages in the solutions were read at intervals of 24 hours...