title: Dimensional stability ofautoclave sterilised addition cured impressions and trays.
abstract: The aim of this study was to investigate the dimensional accuracy of impressions following sterilisation by autoclaving. Dental impressions (75) were of a dentoform containing 6 reference points. The impressions were split into 5 groups of 15, each group used a different impression technique. Groups were divided into 3 subgroups with 5 impressions as control, 5 for disinfection by Perform-ID and 5 being autoclaved. Measurements were made using a travelling light microscope. A minimal significant dimensional difference (0.01<P<0.05) was observed when using the one-stage impression method. No significant dimensional differences were observed for all other groups (P>0.05). The trays and materials tested were suitable for the autoclave sterilisation.
authors.forename: S
authors.initials: S
authors.lastname: Deb
authors.forename: S
authors.initials: S
authors.lastname: Etemad-Shahidi
authors.forename: B J
authors.initials: BJ
authors.lastname: Millar
mesh_terms: D001641:Bicuspid; D003481:Cuspid; D003760:Dental Impression Materials / Q000737:chemistry*; D003761:Dental Impression Technique / Q000295:instrumentation*; D004203:Disinfection / Q000379:methods; D057918:Fiducial Markers; D005881:Gingiva; D006801:Humans; D008422:Materials Testing; D003765:Models, Dental; D008963:Molar; D013242:Sterilization / Q000379:methods*; D013499:Surface Properties
chemical_list: D003760:Dental Impression Materials