Impact of Ammonium Hexafluorosilicate Varnish on Arresting Artificial Root Caries in Human Permanent Teeth: An In Vitro Study
Tuqa Akram Weli, Baydaa Ahmed Yas, Maha Adel MahmoodAbstract
Background:
Ammonium hexafluorosilicate (AHF) solution is one of the fluoride compounds used in the prevention of dental caries and treatment of dentin hypersensitivity without causing tooth discoloration after application.
Objective:
This study was conducted to evaluate the effect of AHF on the microhardness of human demineralized dentin in comparison with sodium fluoride and deionized water.
Materials and Methods:
Fifty sound, permanent human maxillary first premolars were collected from Iraqi patients and divided randomly into five groups: control (-ve) deionized water, control (+ve) sodium fluoride 2%, and three study groups with different concentrations 10,000, 15,000, 20,000 ppm of AHF, respectively. The teeth were tested for baseline microhardness, after demineralization, and after treatment with selected concentrations of AHF, sodium fluoride (NaF), and deionized water according to their group’s design by using a Digital Vickers microhardness tester. Data were analyzed by using Shapiro–Wilk, repeated measure analysis of variance with Tukey’s honestly significant difference.
Results:
All the groups of AHF (10,000, 15,000, 20,000 ppm) have a statistically higher percentage of surface microhardness (SMH) recovery than the NaF and deionized water. In the treatment stage, SMH of 20,000 ppm AHF shows the highest results.
Conclusion:
The present study found that AHF has a remineralizing effect on dentin with artificially carious lesions and its effect is higher than that of sodium fluoride 2% and the remineralization effect of the AHF increases as the concentration of it increases.