title: Modification of stained enamel surfaces: use of hydrochloric acid and pumice mixture.
mesh_terms: D003743:Dental Enamel / Q000473:pathology; D006801:Humans; D006851:Hydrochloric Acid / Q000627:therapeutic use*; D017640:Silicates; D012824:Silicic Acid / Q000627:therapeutic use*; D012822:Silicon Dioxide / Q000627:therapeutic use*; D014073:Tooth Bleaching / Q000379:methods*; D014075:Tooth Discoloration / Q000628:therapy*
chemical_list: D017640:Silicates; D012824:Silicic Acid; D012822:Silicon Dioxide; C005144:pumice; D006851:Hydrochloric Acid