title: The effects of disposable and custom-made impression trays on the accuracy of impressions.
abstract: This study indicates that some non-rigid impression trays, including disposable plastic trays and custom-made acrylic resin trays, may produce unreliable results when used with some medium-bodied elastomers. The study does not question the well-documented clinical accuracy of these elastomers when they are used with rigid trays. Disposable plastic trays are found to be acceptable when used with a combination of reversible and non-reversible hydrocolloid impression materials.
authors.forename: J F
authors.initials: JF
authors.lastname: Burton
authors.forename: J A
authors.initials: JA
authors.lastname: Hood
authors.forename: D J
authors.initials: DJ
authors.lastname: Plunkett
authors.forename: S S
authors.initials: SS
authors.lastname: Johnson
mesh_terms: D000464:Alginates; D003102:Colloids; D003442:Crowns; D003760:Dental Impression Materials; D003761:Dental Impression Technique / Q000295:instrumentation*; D004209:Disposable Equipment; D004867:Equipment Design; D003765:Models, Dental; D010969:Plastics; D012408:Rubber; D013499:Surface Properties
chemical_list: D000464:Alginates; D003102:Colloids; D003760:Dental Impression Materials; D010969:Plastics; D012408:Rubber