The effects of disposable and custom-made impression trays on the accuracy of impressions.
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.
Burton
J F
JF
Hood
J A
JA
Plunkett
D J
DJ
Johnson
S S
SS
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
D000464:Alginates; D003102:Colloids; D003760:Dental Impression Materials; D010969:Plastics; D012408:Rubber