title: In vitro cytotoxicity evaluation of a self-adhesive, methacrylate resin-based root canal sealer.
abstract: This study compared the cytotoxicity of MetaSEAL (Parkell Inc, Farmington, NY), a methacrylate resin-based sealer with an epoxy resin-based (AH Plus Jet; Dentsply Caulk, Milford, DE) and a zinc oxide-eugenol-based sealer (Pulp Canal Sealer; SybronEndo, Orange, CA). Five-millimeter diameter disks prepared from the respective sealer and disks prepared from Teflon (negative control) and polymethyl methacrylate (positive control) were placed in direct contact with a rat osteosarcoma (ROS) 17/2.8 rat osteoblast-like cell line at six intervals after setting completely at 72 hours and for 5 succeeding weeks after the disks were immersed in simulated body fluid. Succinate dehydrogenase activity was evaluated by using 3-(4,5-dimethylthiazole-2-yl)-2,5-diphenyl tetrazolium bromide assay. All sealers exhibited severe toxicity at 72 hours, after which toxicity decreased gradually over the experimental period except for Pulp Canal Sealer, which remained severely toxic. MetaSEAL was more toxic than AH Plus Jet during the first week. Both were similar to the toxicity profile of the positive control after the first week, which was probably diffusion controlled.
authors: Department of Conservative Dentistry and Endodontics, School of Dentistry, University of Cagliari, Italy.
authors: Luigi
authors: L
authors: Pinna
authors: Martha G
authors: MG
authors: Brackett
authors: Petra E
authors: PE
authors: Lockwood
authors: Bradford P
authors: BP
authors: Huffman
authors: Sui
authors: S
authors: Mai
authors: Elisabetta
authors: E
authors: Cotti
authors: Claudia
authors: C
authors: Dettori
authors: David H
authors: DH
authors: Pashley
authors: Franklin R
authors: FR
authors: Tay
mesh_terms: D000818:Animals; D045744:Cell Line, Tumor; D004853:Epoxy Resins / Q000633:toxicity; D008689:Methacrylates / Q000633:toxicity*; D010006:Osteoblasts / Q000187:drug effects*; D051381:Rats; D012387:Root Canal Filling Materials / Q000633:toxicity*; D015035:Zinc Oxide-Eugenol Cement / Q000633:toxicity
chemical_list: D004853:Epoxy Resins; D008689:Methacrylates; D012387:Root Canal Filling Materials; D015035:Zinc Oxide-Eugenol Cement; C534916:epoxy resin-based root canal sealer; C534239:metaseal; C076543:Kerr Pulp Canal Sealer