title: Triple tray crown and bridge procedures: a guide to how dental assistants can assist the dentist: part 1.
abstract: The manual dual-arch (or triple tray) technique is an efficient way of making a definitive impression and making temporary provisional restorations for crown and bridge procedures. This article demonstrates how a dental assistant can assist a dentist during triple tray crown and bridge procedures. This is the first part of a two-part article, and explains mixing impression materials, making pre-operative dual-arch impressions, deciding in what situations to use separate arch impressions instead of the triple tray, and introduces the topic of making provisional restorations. In the future, in-office CAD-CAM scanning and milling of restorations, or digital scanning of tooth preparations, followed by e-mailing the scans to a dental laboratory, may reduce the frequency of use of the manual triple tray impression technique. However, its intrinsic efficiency may prevent it from becoming obsolete.
authors.forename: John S
authors.initials: JS
authors.lastname: Mamoun
authors.forename: Mariam
authors.initials: M
authors.lastname: Javaid
mesh_terms: D003442:Crowns; D003726:Dental Assistants; D003760:Dental Impression Materials; D003761:Dental Impression Technique; D003829:Denture, Partial; D006801:Humans
chemical_list: D003760:Dental Impression Materials