title: Smear layer removal effects on apical leakage.
mesh_terms: D001840:Dental Bonding; D003763:Dental Leakage / Q000209:etiology*; D003804:Dentin / Q000648:ultrastructure*; D006171:Gutta-Percha; D006801:Humans; D020100:Hydrogels; D011102:Polyhydroxyethyl Methacrylate / Q000031:analogs & derivatives; D012390:Root Canal Therapy / Q000379:methods*
chemical_list: D020100:Hydrogels; C000257:polyhydroxyethyl methacrylate hydrogels; D011102:Polyhydroxyethyl Methacrylate; D006171:Gutta-Percha