title: Assessment of gingival margin thickness before margin placement.
abstract: Matrix material can be cut and placed beneath the gingival tissue to mimic a metal collar on a metal/ceramic crown restoration. If this metal matrix causes a discoloration of the gingival tissue, it would be wise to restore the tooth by using an all-porcelain margin.
authors.affiliation: Department of Prosthodontics, University of Texas Health Science Center, Dental School, San Antonio.
authors.forename: D A
authors.initials: DA
authors.lastname: Kaiser
authors.forename: T W
authors.initials: TW
authors.lastname: Hummert
mesh_terms: D003442:Crowns; D017267:Dental Prosthesis Design; D004955:Esthetics, Dental; D005881:Gingiva / Q000033:anatomy & histology*; D006801:Humans; D008434:Matrix Bands; D016876:Metal Ceramic Alloys
chemical_list: D016876:Metal Ceramic Alloys