Fissure topography after combined 20- and 60-seconds etching and mechanical preparation viewed by SEM.
D000134:Acid Etching, Dental / Q000379:methods*; D001840:Dental Bonding / Q000379:methods*; D003737:Dental Cavity Preparation / Q000379:methods*; D003743:Dental Enamel / Q000648:ultrastructure*; D006801:Humans; D008855:Microscopy, Electron, Scanning; D013997:Time Factors