title: Enamel pretreatment in direct bonding of orthodontic attachments: a preliminary laboratory comparison between phosphoric acid gel and solution.
mesh_terms: D000134:Acid Etching, Dental; D002118:Calcium / Q000032:analysis; D001840:Dental Bonding / Q000379:methods; D003743:Dental Enamel / Q000187:drug effects* / Q000648:ultrastructure; D005782:Gels; D006801:Humans; D009967:Orthodontic Appliances; D010756:Phosphoric Acids / Q000494:pharmacology*; D012996:Solutions; D013054:Spectrophotometry, Atomic
chemical_list: D005782:Gels; D010756:Phosphoric Acids; D012996:Solutions; D002118:Calcium