title: CONDITIONS AFFECTING THE REHARDENING OF SOFTENED ENAMEL.
mesh_terms: D001031:Apatites; D002118:Calcium; D002130:Calcium Phosphates; D055598:Chemical Phenomena; D002621:Chemistry; D003743:Dental Enamel; D005459:Fluorides; D006244:Hardness; D006863:Hydrogen-Ion Concentration; D010710:Phosphates
chemical_list: D001031:Apatites; D002130:Calcium Phosphates; D010710:Phosphates; D005459:Fluorides; D002118:Calcium
keywords: APATITES; CALCIUM; CALCIUM PHOSPHATES; CHEMISTRY; DENTAL ENAMEL; FLUORIDES; HARDNESS; HYDROGEN-ION CONCENTRATION; PHOSPHATES