title: Sealing ability of four retrofilling techniques.
mesh_terms: D000818:Animals; D001047:Apicoectomy; D003723:Dental Amalgam; D001840:Dental Bonding; D003763:Dental Leakage / Q000175:diagnosis*; D006171:Gutta-Percha; D008253:Macaca mulatta; D012184:Retrograde Obturation / Q000379:methods*
chemical_list: D003723:Dental Amalgam; D006171:Gutta-Percha