title: Bismuth-doped injectable calcium phosphate cement with improved radiopacity and potent antimicrobial activity for root canal filling.
abstract: A bismuth-doped injectable calcium phosphate cement (BD-ICPC) with improved radiopacity, potent antimicrobial activity and sealability was developed by introducing bismuth salicylate basic (BSB) into the powder phase of the calcium phosphate cement (CPC). The results showed that the radiopacity and sealability of BD-ICPC were improved compared with pure ICPC. Although BSB had a retarding effect on the setting rate of the cement, the addition of BSB reduced the viscosity and yield stress of BD-ICPC, thus enhanced its injectability. It was noteworthy that BD-ICPC had a potent antimicrobial activity with improved sealability. In addition, BD-ICPC afforded a uniform and tight adaptation to the root canal wall. These results indicate that BD-ICPC possesses a combination of good in vitro radiopacity, high injectability, potent antimicrobial activity, improved sealability and tight adaptation to the root canal. It is expected to be used as a novel root canal filling material.
authors.affiliation: State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China.
authors.forename: Fangping
authors.initials: F
authors.lastname: Chen
authors.forename: Changsheng
authors.initials: C
authors.lastname: Liu
authors.forename: Yuhao
authors.initials: Y
authors.lastname: Mao
mesh_terms: D000890:Anti-Infective Agents / Q000494:pharmacology*; D001729:Bismuth / Q000494:pharmacology*; D002130:Calcium Phosphates / Q000494:pharmacology*; D019245:Compressive Strength / Q000187:drug effects; D003738:Dental Cements / Q000494:pharmacology* / Q000528:radiation effects*; D003786:Dental Pulp Cavity / Q000187:drug effects / Q000648:ultrastructure; D006801:Humans; D007267:Injections; D008422:Materials Testing / Q000379:methods*; D008826:Microbial Sensitivity Tests; D008855:Microscopy, Electron, Scanning; D011859:Radiography; D012387:Root Canal Filling Materials / Q000494:pharmacology*; D012459:Salicylates / Q000737:chemistry; D013211:Staphylococcus aureus / Q000187:drug effects; D014070:Tooth / Q000000981:diagnostic imaging / Q000187:drug effects; D014783:Viscosity / Q000187:drug effects; D014961:X-Ray Diffraction
chemical_list: D000890:Anti-Infective Agents; D002130:Calcium Phosphates; D003738:Dental Cements; D012387:Root Canal Filling Materials; D012459:Salicylates; C020243:calcium phosphate; C496893:Bismuth Salicylate; D001729:Bismuth