Micro-hardness of Incipient Carious Enamel Lesions Remineralized Using Fluoride, Tri-calcium Phosphate and Nanohydroxyapatite Versus Resinous and Resin Modified Glass Ionomer Infiltrants: In vitro study

Abstract

This study was conducted to compare between the effect non-invasive treatment modality using fluoride, Tri-Calcium Phosphate and nanohydroxyapatite based remineralizing agents versus micro-invasive treatment modality using Resinous and Resin modified glass ionomer Infiltrants materials on surface micro-hardness of incipient carious enamel lesions. Furthermore, the stability of these treatment options upon exposure to acidic challenge. A total of 60 sound human permanent molars were used in this study. The specimens were divided into six equal groups (10 teeth for each group) according to the treatment modality; Group (A0): Artificial saliva, Group (A1): fluoride, Group (A2): Tri-Calcium Phosphate, Group (A3): Nano Hydroxyapatite, Group (A4): Resin infiltrant and Group (A5): Resin modified glass ionomer infiltrant. The molars were decoronated and mounted in cylindrical self-cured acrylic resin molds with their buccal surface facing upwards