title: Cytotoxicity of temporary crown and bridge materials.
abstract: In vitro cytotoxicity of freshly prepared temporary crown and bridge materials was studied using mouse fibroblasts prelabelled with 3H-thymidine grown in shake flask cultures. Cytotoxicity was measured as (1) lack of cell multiplication, (2) stainability with Trypan blue and (3) release of 3H-labelled material to the culture medium. All the materials tested (zinc oxide-eugenol cement (ZOE), Scutan and Sevriton) were cytotoxic in this system, ZOE most strongly. This finding favours the view that the in vitro cytotoxicity of dental materials should not be used alone as a screening test for their biological compatibility under clinical conditions since clinical experience and previous in vivo findings have established that ZOE is biologically well tolerated by the dental tissues.
mesh_terms: D000818:Animals; D002455:Cell Division / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D003442:Crowns; D003764:Dental Materials / Q000009:adverse effects*; D003794:Dental Restoration, Temporary; D003833:Denture, Partial, Temporary; D005347:Fibroblasts / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D051379:Mice
chemical_list: D003764:Dental Materials