Double arch impressions for simplified restorative dentistry.

Use of a double arch, closed-mouth technique as described in this article enables dentists to obtain cast and die placement in centric occlusion in a single step. Complete closure of the teeth is mandatory for registering the interocclusal relationship correctly. The accuracy of the interocclusal relationship is more likely because of the decreased number of steps in the technique. Several different trays are available for the double arch impression technique. The more rigid trays buttress the impression material and reduce the possibilities of distortion in the final impression. Several variations in the double arch impression technique are possible, and tray selection is dependent on the demands of each patient.