Bone Demineralization, PathologicBone Demineralization TechniqueTooth DemineralizationDental EnamelBone and BonesTooth RemineralizationCalcification, PhysiologicHardness TestsCariostatic AgentsMicroradiographyDental Caries Activity TestsDentinFluorides, TopicalRoot CariesBone RemodelingDental CariesDental Enamel SolubilityBone DensityTooth Erosion