title: The matrix impression system for fixed prosthodontics.
abstract: This article describes the instrumentation, materials, and clinical procedures for the matrix impression system. The matrix impression system uses a custom matrix to control the sulcular environment and to deliver impression material to the subgingival parts to be impressed. It describes the four types of forces involved in gingival displacement during impressions, effective delivery of impression material with simultaneous sulcular cleansing, and simplification of complex impressions with or without segmentation. The application of the matrix impression system is described for making routine impressions and for some atypical problems. The article also provides a detailed description of the formation and design of the matrix.
authors.affiliation: Department of Restorative Dentistry, Baltimore College of Dental Surgery, Dental School, University of Maryland, USA.
authors.forename: G J
authors.initials: GJ
authors.lastname: Livaditis
mesh_terms: D003760:Dental Impression Materials; D003761:Dental Impression Technique / Q000295:instrumentation*; D003799:Dental Stress Analysis; D003830:Denture, Partial, Fixed; D004548:Elasticity; D004867:Equipment Design; D004987:Ethers; D005881:Gingiva / Q000502:physiology; D006801:Humans; D008434:Matrix Bands; D011145:Polyvinyls; D012408:Rubber; D012833:Siloxanes; D013314:Stress, Mechanical; D014783:Viscosity
chemical_list: D003760:Dental Impression Materials; D004987:Ethers; C096535:Permadyne Premier; D011145:Polyvinyls; D012833:Siloxanes; C034183:vinyl polysiloxane; D012408:Rubber