Vol. 11, Issue 2, Part A (2025)

Introduction: The main cause of erosive primary tooth is the routinely consumption of carbonated drinking which induced color change of the enamel especially in child. For that reason, variant of anti-demineralization agents has been utilized such as nanohydroxyaptite, hydroxyapatite and sodium fluoride gels both of which (nanohydroxyaptite, hydroxyapatite) have been added to the oral care gels to evaluate the effect of gels on shade. The aim of this study was compared of color change on the treating and prevention the eroded enamel surface of the primary teeth from thee different gels by analysis the vita easy shade.
Materials and Methods: Nanohydroxyaptite, hydroxyapatite gels was prepared and Fourier Transform Infrared Spectroscopy test to evaluate them. Thirty sound buccal segment of primary first or second molar was prepared and color was measured then they were exposed to coca cola for 60 minutes with shaking 3 times daily for 10 days. The erosive and color effect of the carbonated drinking on the primary tooth surface enamel was studied by Vita easy shade advance 4 device respectively. They were distributed into three groups according to the different treating gels applied to study the color effects on the primary tooth enamel. In order to evaluate color of the primary tooth enamel of the sample in two different condition. Spectroscopic morphology (two dimension, three dimension picture) was studied in the three phases
Results: In the first phase, shade change was higher in hydroxyapatite followed by nanohydroxyapatite while least in sodium fluoride but with no significant difference. Following multiple pairwise comparisons, all results found to be significant when compare each agent with each other, except when compare nanohydroxyapatite with hydroxyapatite in shade change from 1st to 2nd exposure and in shade from remineralization to 2nd exposure when compare each agent with sodium fluoride, all these results are not significant. 
Conclusion: Nanohydroxyaptite gel better than hydroxyapatite gel in whiting effect but sodium fluoride gel more effective than others in the treatment phase, nanohydroxyapatite gel better than sodium flouride and hydroxyapatite gels in preventive color change.