title: Retrograde instrumentation and obturation with new devices.
mesh_terms: D000328:Adult; D000368:Aged; D001047:Apicoectomy; D001641:Bicuspid; D004867:Equipment Design; D006171:Gutta-Percha; D006801:Humans; D008297:Male; D008963:Molar; D012184:Retrograde Obturation / Q000295:instrumentation* / Q000379:methods
chemical_list: D006171:Gutta-Percha