title: Histopathological study of a newly developed root canal sealer containing tetracalcium-dicalcium phosphates and 1.0% chondroitin sulfate.
abstract: We studied the possibility of the clinical use of a calcium phosphate-type newly developed sealer composed of tetracalcium phosphate, dicalcium phosphate dihydrate, and a modified McIlvain's buffer solution (TDM). Another sealer using the buffer solution, to which 2.5% chondroitin sulfate was added to promote wound healing (TDM-S), was also studied. TDM and TDM-S were histopathologically compared with another type of calcium phosphate sealer (ARS), which is commercially available in Japan, in the dorsal subcutaneous tissue and in the periapical tissue of rats. TDM and TDM-S caused no inflammatory reactions in the subcutaneous tissue. The periapical tissue reacted mildly to them. ARS caused severe inflammatory reactions in both the subcutaneous and the periapical tissue. These results indicate that TDM-S has excellent histocompatibility and potential as a root canal sealer.
authors.affiliation: Department of Endodontics, Osaka Dental University, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Yoshikawa
authors.forename: S
authors.initials: S
authors.lastname: Hayami
authors.forename: I
authors.initials: I
authors.lastname: Tsuji
authors.forename: T
authors.initials: T
authors.lastname: Toda
mesh_terms: D000180:Acrylic Resins / Q000494:pharmacology; D000818:Animals; D001672:Biocompatible Materials / Q000494:pharmacology*; D002021:Buffers; D002130:Calcium Phosphates / Q000494:pharmacology*; D002809:Chondroitin Sulfates / Q000494:pharmacology*; D003238:Connective Tissue / Q000187:drug effects; D008422:Materials Testing; D010486:Periapical Tissue / Q000187:drug effects*; D051381:Rats; D017207:Rats, Sprague-Dawley; D012387:Root Canal Filling Materials / Q000494:pharmacology*; D014945:Wound Healing / Q000187:drug effects
chemical_list: D000180:Acrylic Resins; D001672:Biocompatible Materials; D002021:Buffers; D002130:Calcium Phosphates; D012387:Root Canal Filling Materials; C006903:carbopol 940; D002809:Chondroitin Sulfates