Biocompatibility and biomineralization assessment of bioceramic-, epoxy-, and calcium hydroxide-based sealers.
Obturation of the root canal system aims to fill empty spaces, promoting hermetic sealing and preventing bacterial activity in periapical tissues. This should provide optimal conditions for repair, stimulating the process of biomineralization. An endodontic sealer should be biocompatible once it is in direct contact with periapical tissues. The aim of this study was to evaluate the rat subcutaneous tissue response to implanted polyethylene tubes filled with Smartpaste Bio, Acroseal, and Sealapex and investigate mineralization ability of these endodontic sealers. Forty Wistar rats were assigned to the three sealers groups and control group, (n = 10 animals/group) and received subcutaneous implants containing the test sealers, and the control group were implanted with empty tubes. After days 7, 15, 30, and 60, animals were euthanized and polyethylene tubes were removed with the surrounding tissues. Inflammatory infiltrate and thickness of the fibrous capsule were histologically evaluated. Mineralization was analyzed by Von Kossa staining and polarized light. Data were tabulated and analyzed via Kruskal-Wallis and Dunn's test. All tested materials induced a moderate inflammatory reaction in the initial periods. Smartpaste Bio induced the mildest inflammatory reactions after day 15. No difference was observed among groups after days 30 or 60. Von Kossa-positive staining and birefringent structures observed under polarized light revealed a larger mineralization area in Sealapex-treated animals followed by Smartpaste Bio-treated animals. At the end of the experiment, all tested sealers were found to be biocompatible. All sealers induced biomineralization, except Acroseal, which induced a mild tissue reaction.
Universidade Estadual Paulista, Univ. Estadual Paulista, Department of Endodontics, Araçatuba Dental School, Araçatuba SP , Brazil, Univ. Estadual Paulista- UNESP, Department of Endodontics, Araçatuba Dental School, Araçatuba, SP, Brazil.
Carlos Roberto Emerenciano
CR
Bueno
Universidade Estadual Paulista, Univ. Estadual Paulista, Department of Endodontics, Araçatuba Dental School, Araçatuba SP , Brazil, Univ. Estadual Paulista- UNESP, Department of Endodontics, Araçatuba Dental School, Araçatuba, SP, Brazil.
Diego
D
Valentim
Universidade Estadual Paulista, Univ. Estadual Paulista, Department of Endodontics, Araçatuba Dental School, Araçatuba SP , Brazil, Univ. Estadual Paulista- UNESP, Department of Endodontics, Araçatuba Dental School, Araçatuba, SP, Brazil.
Vanessa Abreu Sanches
VA
Marques
Universidade Estadual Paulista, Univ. Estadual Paulista, Department of Endodontics, Araçatuba Dental School, Araçatuba SP , Brazil, Univ. Estadual Paulista- UNESP, Department of Endodontics, Araçatuba Dental School, Araçatuba, SP, Brazil.
João Eduardo
JE
Gomes-Filho
Universidade Estadual Paulista, Univ. Estadual Paulista, Department of Endodontics, Araçatuba Dental School, Araçatuba SP , Brazil, Univ. Estadual Paulista- UNESP, Department of Endodontics, Araçatuba Dental School, Araçatuba, SP, Brazil.
Luciano Tavares Angelo
LT
Cintra
Universidade Estadual Paulista, Univ. Estadual Paulista, Department of Endodontics, Araçatuba Dental School, Araçatuba SP , Brazil, Univ. Estadual Paulista- UNESP, Department of Endodontics, Araçatuba Dental School, Araçatuba, SP, Brazil.
Rogério Castilho
RC
Jacinto
Universidade Estadual Paulista, Univ. Estadual Paulista, Department of Endodontics, Araçatuba Dental School, Araçatuba SP , Brazil, Univ. Estadual Paulista- UNESP, Department of Endodontics, Araçatuba Dental School, Araçatuba, SP, Brazil.
Eloi
E
Dezan-Junior
D000818:Animals; D001672:Biocompatible Materials / Q000737:chemistry / Q000494:pharmacology*; D002126:Calcium Hydroxide / Q000737:chemistry / Q000494:pharmacology*; D002516:Ceramics / Q000737:chemistry / Q000494:pharmacology*; D004853:Epoxy Resins / Q000737:chemistry / Q000494:pharmacology*; D007249:Inflammation / Q000139:chemically induced; D008297:Male; D008422:Materials Testing; D017208:Rats, Wistar; D015203:Reproducibility of Results; D012387:Root Canal Filling Materials / Q000737:chemistry / Q000494:pharmacology*; D012459:Salicylates / Q000737:chemistry / Q000494:pharmacology; D040521:Subcutaneous Tissue / Q000187:drug effects* / Q000473:pathology; D013997:Time Factors
C477053:Acroseal; D001672:Biocompatible Materials; D004853:Epoxy Resins; D012387:Root Canal Filling Materials; D012459:Salicylates; C534916:epoxy resin-based root canal sealer; C055601:Sealapex; D002126:Calcium Hydroxide