Balan A.,Grt Pbpa University Of Medicine And Pharmacy |
Andrian S.,Grt Pbpa University Of Medicine And Pharmacy |
Savin C.,Grt Pbpa University Of Medicine And Pharmacy |
Sandu A.-V.,Technical University Gheorghe Asachi |
And 2 more authors.
Revista de Chimie | Year: 2015
The aims of this study were to investigate the surface topography and to compare the calcium and phosphorus ions concentration in primary teeth enamel when two commercial remineralizing products were used before the contact with two acidic drinks. Thirty-five caries-free enamel samples were randomly assigned to seven groups (1-7). In group 1 the slices has been stored in distilled water (controlgroup). In groups 2 and3 the slices have been immersed four times a day, 5 min each, for fourteen days, in Pepsi®(PepsiCo) and lemon juice, respectively. Between demineralizing cycles, the samples have been stored in artificial saliva. In groups 4 and 5, before immersion in acidic beverages, a commercial fluoride gel (PreviDent® brush-on gel, Colgate®) was applied for 3 min In groups 6 and 7, before immersion in acidic beverages, an ACP-CPP cream (MI Paste Plus, GC Corporation) was applied for 3 min. The samples were analyzed using a scanning electron microscope and an EDX detector. The mean calcium and phosphorus ion concentration in enamel significantly decreased after the immersion in both tested beverages (mean calcium ion concentration (wt%): 25.45 in control group, 16.47 in lemon juice, 20.24 in Pepsi®; mean phosphorus ion concentration (wt%) was: 10.45 in control group, 8.77 in lemon juice, 9.12 in Pepsi®. The decrease of mineral ion concentrations in enamel was signiricantly lower when both remineralizing products have been used before the immersion in acidic drinks (p= <0,05, ANOVA and Bonferroni test). In the conditions of this study, both remineralizing products offered to primary enamel a protective effect on acidic challenge of the tested drinks.