Comparative study of selected alginate materials and devices.
Four different brands of alginate impression materials were mixed by hand and ten impressions of each were made of a block for detail reproductions. In addition, two different mechanical devices were used to prepare one of these alginate impression materials. Thus a total of six groups was tested, with ten impressions per group. Stone casts of these 60 impressions were compared by the line study method and the number of surface defects. A statistical analysis was performed on the collected data. The results indicated that the Whip-Mix vacuum mechanical spatulator produced significantly superior results to the Columbus system centrifugal mechanical spatulator, and that among the four alginates hand mixed, the Jeltrate impression material gave better results.
D000464:Alginates; D002133:Calcium Sulfate; D003748:Dental Equipment; D003761:Dental Impression Technique / Q000295:instrumentation*; D013499:Surface Properties
D000464:Alginates; D002133:Calcium Sulfate