title: Etching and bonding patterns in human sub-surface enamel.
mesh_terms: D000134:Acid Etching, Dental; D003188:Composite Resins; D001840:Dental Bonding; D003743:Dental Enamel / Q000648:ultrastructure*; D006801:Humans; D014520:Urethane
chemical_list: D003188:Composite Resins; D014520:Urethane