title: Scanning x-ray microanalysis of root canal sealers.
abstract: Seven commercially available root canal sealer powders were analyzed by scanning x-ray microanalysis to identify constituent elements in each. Analysis showed that strongly cytotoxic sealers in vitro contained lead or magnesium, while those materials which exhibited mild or moderate cytotoxicity in vitro contained bismuth, zinc, calcium, or silicone.
mesh_terms: D003738:Dental Cements / Q000032:analysis; D004577:Electron Probe Microanalysis; D007854:Lead / Q000032:analysis; D008274:Magnesium / Q000032:analysis; D008855:Microscopy, Electron, Scanning; D012387:Root Canal Filling Materials / Q000032:analysis*; D014965:X-Rays; D015034:Zinc Oxide / Q000032:analysis
chemical_list: D003738:Dental Cements; D012387:Root Canal Filling Materials; D007854:Lead; D008274:Magnesium; D015034:Zinc Oxide